Updated documentation

Rebase TIP 505 implementation a patch for 8.6.
small code review (duplicate code removed)
2018-09-27 07:44:50 +00:00 · 2018-09-10 15:28:23 +00:00 · 2018-09-07 14:24:49 +00:00 · 2018-09-07 12:04:32 +00:00 · 2018-09-07 11:55:01 +00:00 · 2018-09-07 10:45:30 +00:00
711 changed files with 52301 additions and 54443 deletions
@@ -12,6 +12,8 @@ win/buildall.vc.bat
 win/coffbase.txt
 win/makefile.vc
 win/rules.vc
+win/rules-ext.vc
+win/targets.vc
 win/tcl.dsp
 win/tcl.dsw
 win/tcl.hpj.in
@@ -12,6 +12,8 @@ win/buildall.vc.bat
 win/coffbase.txt
 win/makefile.vc
 win/rules.vc
+win/rules-ext.vc
+win/targets.vc
 win/tcl.dsp
 win/tcl.dsw
 win/tcl.hpj.in
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-	<name>tcl8.7</name>
+	<name>tcl8.6</name>
 	<comment></comment>
 	<projects>
 	</projects>
@@ -1,5 +1,5 @@
 README:  Tcl
-    This is the Tcl 8.7a2 source distribution.
+    This is the Tcl 8.6.8 source distribution.
 	http://sourceforge.net/projects/tcl/files/Tcl/
    You can get any source release of Tcl from the URL above.

@@ -49,7 +49,7 @@ and selling it either in whole or in part.  See the file

 Extensive documentation is available at our website.
 The home page for this release, including new features, is
-	http://www.tcl.tk/software/tcltk/8.7.html
+	http://www.tcl.tk/software/tcltk/8.6.html

 Detailed release notes can be found at the file distributions page
 by clicking on the relevant version.
@@ -61,9 +61,9 @@ Information about Tcl itself can be found at
 There have been many Tcl books on the market.  Many are mentioned in the Wiki:
 	http://wiki.tcl.tk/_/ref?N=25206

-To view the complete set of reference manual entries for Tcl 8.7 online,
+To view the complete set of reference manual entries for Tcl 8.6 online,
 visit the URL:
-	http://www.tcl.tk/man/tcl8.7/
+	http://www.tcl.tk/man/tcl8.6/

 2a. Unix Documentation
 ----------------------
@@ -8234,7 +8234,7 @@ Dropped support for OS X versions less than 10.4 (Tiger) (fellows)

 2013-05-16 (platform support) mingw-4.0 (nijtmans)

-2013-05-19 (platform support) FreeBSD updates (gahr)
+2013-05-19 (platform support) FreeBSD updates (cerutti)

 2013-05-20 (bug fix)[3613567] access error temp file creation (keene)

@@ -8657,7 +8657,7 @@ improvements to regexp engine from Postgres (lane,porter,fellows,seltenreich)

 2016-05-21 (bug)[f7d4e] [namespace delete] performance (fellows)

-2016-06-02 (TIP 447) execution time verbosity option (gahr)
+2016-06-02 (TIP 447) execution time verbosity option (cerutti)
 => tcltest 2.4.0

 2016-06-16 (bug)[16828b] crash due to [vwait] trace undo fail (dah,porter)
@@ -8796,48 +8796,37 @@ improvements to regexp engine from Postgres (lane,porter,fellows,seltenreich)

 --- Released 8.6.7, August 9, 2017 --- http://core.tcl.tk/tcl/ for details

-2016-03-17 (bug)[0b8c38] socket accept callbacks always in global ns (porter)
-        *** POTENTIAL INCOMPATIBILITY ***
+2017-08-10 [array names -regexp] supports backrefs (goth)

-2016-07-01 Hack accommodations for legacy Itcl 3 disabled (porter)
+2017-08-10 Fix gcc build failures due to #pragma placement (cassoff,fellows)

-2016-07-12 Make TCL_HASH_TYPE build-time configurable (nijtmans)
-
-2016-07-19 (bug)[0363f0] Partial array search ID reform (porter)
-
-2016-07-19 (feature removed) Tcl_ObjType "array search" unregistered (porter)
-	*** POTENTIAL INCOMPATIBILITY for Tcl_GetObjType("array search") ***
-
-2016-10-04 Server socket on port 0 chooses port supporting IPv4 * IPv6 (max)
-
-2016-11-25 [array named -regexp] supports backrefs (goth)
-
-2017-01-04 (TIP 456) New routine Tcl_OpenTcpServerEx() (limeboy)
-
-2017-01-04 (TIP 459) New subcommand [package files] (nijtmans)
-
-2017-01-16 threaded allocator initialization repair (vasiljevic,nijtmans)
-
-2017-01-30 Add to Win shell builtins: assoc ftype move (ashok)
-
-2017-03-31 TCL_MEM_DEBUG facilities better support 64-bit memory (nijtmans)
-
-2017-04-13 \u escaped content in msg files converted to true utf-8 (nijtmans)
-
-2017-05-18 (TIP 458) New epoll or kqueue notifiers are default (alborboz)
-
-2017-05-31 Purge build support for SunOS-4.* (stu)
-
-2017-06-22 (TIP 463) New option [regsub ... -command ...] (fellows)
-
-2017-06-22 (TIP 470) Tcl_GetDefineContextObject();[oo::define [self]] (fellows)
-=> TclOO 1.2.0
-
-2017-06-23 (TIP 472) Support 0d as prefix of decimal numbers (iyer,griffin)
+2017-08-29 (bug)[b50fb2] exec redir append stdout and stderr to file (coulter)

 2017-08-31 (bug)[2a9465] http state 100 continue handling broken (oehlmann)
 => http 2.8.12

 2017-09-02 (bug)[0e4d88] replace command, delete trace kills namespace (porter)

--- Released 8.7a1, September 8, 2017 --- http://core.tcl.tk/tcl/ for details
+2017-10-19 (bug)[1a5655] [info * methods] includes mixins (fellows)
+
+2017-10-23 tzdata updated to Olson's tzdata2017c (jima)
+
+2017-10-24 (bug)[fc1409] segfault in method cloning, oo-15.15 (coulter,fellows)
+
+2017-11-03 (bug)[6f2f83] More robust [load] for ReactOS (werner)
+
+2017-11-08 (bug)[3298012] Stop crash when hash tables overflow 32 bits (porter)
+
+2017-11-14 (bug)[5d6de6] Close failing case of [package prefer stable] (kupries)
+
+2017-11-17 (bug)[fab924] Fix misleading [load] message on Windows (oehlmann)
+
+2017-12-05 (bug)[4f6a1e] Crash when ensemble map and list are same (sebres)
+
+2017-12-06 (bug)[ce3a21] file normalize failure when tail is empty (porter)
+
+2017-12-08 (new)[TIP 477] nmake build system reform (nadkarni)
+
+2017-12-19 (bug)[586e71] EvalObjv exception handling at level #0 (sebres,porter)
+
+--- Released 8.6.8, December 22, 2017 --- http://core.tcl.tk/tcl/ for details
@@ -106,5 +106,5 @@ closedir(
    close(dirp->dd_fd);
    dirp->dd_fd = -1;
    dirp->dd_loc = 0;
-    ckfree(dirp);
+    ckfree((char *) dirp);
 }
@@ -100,7 +100,7 @@ waitpid(
 	} else {
 	    prevPtr->nextPtr = waitPtr->nextPtr;
 	}
-	ckfree(waitPtr);
+	ckfree((char *) waitPtr);
 	return result;
    }

@@ -119,7 +119,7 @@ retrieve the stack trace when script evaluation returns
 \fBTCL_ERROR\fR, like so:
 .PP
 .CS
-int code = Tcl_EvalEx(interp, script, -1, 0);
+int code = Tcl_Eval(interp, script);
 if (code == TCL_ERROR) {
    Tcl_Obj *options = \fBTcl_GetReturnOptions\fR(interp, code);
    Tcl_Obj *key = Tcl_NewStringObj("-errorinfo", -1);
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_CallWhenDeleted 3 7.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_CommandComplete 3 "" Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_Concat 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_CreateFileHandler 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_CreateInterp 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_CreateTimerHandler 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_DetachPids 3 "" Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_DictObj 3 8.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_DoWhenIdle 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -260,10 +260,6 @@ Windows-only convenience
 functions for converting between UTF-8 and Windows strings
 based on the TCHAR type which is by convention
 a Unicode character on Windows NT.
-These functions are essentially wrappers around
-\fBTcl_UtfToExternalDString\fR and
-\fBTcl_ExternalToUtfDString\fR that convert to and from the
-Unicode encoding.
 .PP
 \fBTcl_GetEncodingName\fR is roughly the inverse of \fBTcl_GetEncoding\fR.
 Given an \fIencoding\fR, the return value is the \fIname\fR argument that
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_PutEnv 3 "7.5" Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -176,10 +176,10 @@ it is faster to execute the script directly.
 .TP 23
 \fBTCL_EVAL_GLOBAL\fR
 .
-If this flag is set, the script is processed at global level.  This
-means that it is evaluated in the global namespace and its variable
-context consists of global variables only (it ignores any Tcl
-procedures that are active).
+If this flag is set, the script is evaluated in the global namespace instead of
+the current namespace and its variable context consists of global variables
+only (it ignores any Tcl procedures that are active).
+.\" TODO: document TCL_EVAL_INVOKE and TCL_EVAL_NOERR.

 .SH "MISCELLANEOUS DETAILS"
 .PP
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_ExprLongObj 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_FindExecutable 3 8.1 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_GetCwd 3 8.1 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_GetIndexFromObj 3 8.1 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -57,9 +57,6 @@ after the optional white space and sign are
 .QW \fB0x\fR
 then \fIsrc\fR is expected to be in hexadecimal form;  otherwise,
 if the first such characters are
-.QW \fB0d\fR
-then \fIsrc\fR is expected to be in decimal form; otherwise,
-if the first such characters are
 .QW \fB0o\fR
 then \fIsrc\fR is expected to be in octal form;  otherwise,
 if the first such characters are
@@ -68,8 +65,8 @@ then \fIsrc\fR is expected to be in binary form;  otherwise,
 if the first such character is
 .QW \fB0\fR
 then \fIsrc\fR
-is expected to be in octal form;  otherwise, \fIsrc\fR
-is expected to be in decimal form.
+is expected to be in octal form;  otherwise, \fIsrc\fR is
+expected to be in decimal form.
 .PP
 \fBTcl_GetDouble\fR expects \fIsrc\fR to consist of a floating-point
 number, which is:  white space;  a sign; a sequence of digits;  a
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_GetOpenFile 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_GetTime 3 8.4 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -281,7 +281,7 @@ The \fIhashKeyProc\fR member contains the address of a function called to
 calculate a hash value for the key.
 .PP
 .CS
-typedef TCL_HASH_TYPE \fBTcl_HashKeyProc\fR(
+typedef unsigned int \fBTcl_HashKeyProc\fR(
        Tcl_HashTable *\fItablePtr\fR,
        void *\fIkeyPtr\fR);
 .CE
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1998-2000 by Scriptics Corporation.
 '\" All rights reserved.
-'\"
+'\" 
 .TH Tcl_Init 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_InitStubs 3 8.1 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -23,11 +23,11 @@ Tcl interpreter handle.
 A version string consisting of one or more decimal numbers
 separated by dots.
 .AP int exact in
-1 means that only the particular version specified by
+Non-zero means that only the particular version specified by
 \fIversion\fR is acceptable.
-0 means that versions newer than \fIversion\fR are also
+Zero means that versions newer than \fIversion\fR are also
 acceptable as long as they have the same major version number
-as \fIversion\fR. Other bits have no effect.
+as \fIversion\fR.
 .BE
 .SH INTRODUCTION
 .PP
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_LimitCheck 3 8.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Load 3 8.6 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -1,5 +1,6 @@
 .\"
 .\" Copyright (c) 2008 by Kevin B. Kenny.
+.\" Copyright (c) 2018 by Nathan Coulter. 
 .\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -38,43 +39,39 @@ void
 .SH ARGUMENTS
 .AS Tcl_CmdDeleteProc *interp in
 .AP Tcl_Interp *interp in
-Interpreter in which to create or evaluate a command.
+The relevant Interpreter.
 .AP char *cmdName in
-Name of a new command to create.
+Name of the command to create.
 .AP Tcl_ObjCmdProc *proc in
-Implementation of a command that will be called whenever \fIcmdName\fR
-is invoked as a command in the unoptimized way.
+Called in order to evaluate a command.  Is often just a small wrapper that uses
+\fBTcl_NRCallObjProc\fR to call \fInreProc\fR using a new trampoline.  Behaves
+in the same way as the \fIproc\fR argument to \fBTcl_CreateObjCommand\fR(3)
+(\fIq.v.\fR).
 .AP Tcl_ObjCmdProc *nreProc in
-Implementation of a command that will be called whenever \fIcmdName\fR
-is invoked and requested to conserve the C stack.
+Called instead of \fIproc\fR when a trampoline is already in use.
 .AP ClientData clientData in
-Arbitrary one-word value that will be passed to \fIproc\fR, \fInreProc\fR,
-\fIdeleteProc\fR and \fIobjProc\fR.
+Arbitrary one-word value passed to \fIproc\fR, \fInreProc\fR, \fIdeleteProc\fR
+and \fIobjProc\fR.
 .AP Tcl_CmdDeleteProc *deleteProc in/out
-Procedure to call before \fIcmdName\fR is deleted from the interpreter.
-This procedure allows for command-specific cleanup. If \fIdeleteProc\fR
-is \fBNULL\fR, then no procedure is called before the command is deleted.
+Called before \fIcmdName\fR is deleted from the interpreter, allowing for
+command-specific cleanup. May be NULL.
 .AP int objc in
-Count of parameters provided to the implementation of a command.
+Number of items in \fIobjv\fR.
 .AP Tcl_Obj **objv in
-Pointer to an array of Tcl values. Each value holds the value of a
-single word in the command to execute.
+Words in the command.
 .AP Tcl_Obj *objPtr in
-Pointer to a Tcl_Obj whose value is a script or expression to execute.
+A script or expression to evaluate.
 .AP int flags in
-ORed combination of flag bits that specify additional options.
-\fBTCL_EVAL_GLOBAL\fR is the only flag that is currently supported.
-.\" TODO: This is a lie. But kbk didn't grasp TCL_EVAL_INVOKE and
-.\"       TCL_EVAL_NOERR well enough to document them.
+As described for \fITcl_EvalObjv\fR.
+.PP
 .AP Tcl_Command cmd in
-Token for a command that is to be used instead of the currently
-executing command.
+Token to use instead of one derived from the first word of \fIobjv\fR in order
+to evaluate a command.
 .AP Tcl_Obj *resultPtr out
-Pointer to an unshared Tcl_Obj where the result of expression
-evaluation is written.
+Pointer to an unshared Tcl_Obj where the result of the evaluation is stored if
+the return code is TCL_OK.
 .AP Tcl_NRPostProc *postProcPtr in
-Pointer to a function that will be invoked when the command currently
-executing in the interpreter designated by \fIinterp\fR completes.
+A function to push.
 .AP ClientData data0 in
 .AP ClientData data1 in
 .AP ClientData data2 in
@@ -84,98 +81,51 @@ to the function designated by \fIpostProcPtr\fR when it is invoked.
 .BE
 .SH DESCRIPTION
 .PP
-This series of C functions provides an interface whereby commands that
-are implemented in C can be evaluated, and invoke Tcl commands scripts
-and scripts, without consuming space on the C stack. The non-recursive
-evaluation is done by installing a \fItrampoline\fR, a small piece of
-code that invokes a command or script, and then executes a series of
-callbacks when the command or script returns.
+These functions provide an interface to the function stack that an interpreter
+iterates through to evaluate commands.  The routine behind a command is
+implemented by an initial function and any additional functions that the
+routine pushes onto the stack as it progresses.  The interpreter itself pushes
+functions onto the stack to react to the end of a routine and to exercise other
+forms of control such as switching between in-progress stacks and the
+evaluation of other scripts at additional levels without adding frames to the C
+stack.  To execute a routine, the initial function for the routine is called
+and then a small bit of code called a \fItrampoline\fR iteratively takes
+functions off the stack and calls them, using the value of the last call as the
+value of the routine.
 .PP
-The \fBTcl_NRCreateCommand\fR function creates a Tcl command in the
-interpreter designated by \fIinterp\fR that is prepared to handle
-nonrecursive evaluation with a trampoline. The \fIcmdName\fR argument
-gives the name of the new command. If \fIcmdName\fR contains any
-namespace qualifiers, then the new command is added to the specified
-namespace; otherwise, it is added to the global namespace. \fIproc\fR
-gives the procedure that will be called when the interpreter wishes to
-evaluate the command in an unoptimized manner, and \fInreProc\fR is
-the procedure that will be called when the interpreter wishes to
-evaluate the command using a trampoline. \fIdeleteProc\fR is a
-function that will be called before the command is deleted from the
-interpreter. When any of the three functions is invoked, it is passed
-the \fIclientData\fR parameter.
+\fBTcl_NRCallObjProc\fR calls \fInreProc\fR using a new trampoline.
 .PP
-\fBTcl_NRCreateCommand\fR deletes any existing command
-\fIname\fR already associated with the interpreter
-(however see below for an exception where the existing command
-is not deleted).
-It returns a token that may be used to refer
-to the command in subsequent calls to \fBTcl_GetCommandName\fR.
-If \fBTcl_NRCreateCommand\fR is called for an interpreter that is in
-the process of being deleted, then it does not create a new command,
-does not delete any existing command of the same name, and returns NULL.
+\fBTcl_NRCreateCommand\fR, an alternative to \fBTcl_CreateObjCommand\fR,
+resolves \fIcmdName\fR, which may contain namespace qualifiers, relative to the
+current namespace, creates a command by that name, and returns a token for the
+command which may be used in subsequent calls to \fBTcl_GetCommandName\fR.
+Except for a few cases noted below any existing command by the same name is
+first deleted.  If \fIinterp\fR is in the process of being deleted
+\fBTcl_NRCreateCommand\fR does not create any command, does not delete any
+command, and returns NULL.
 .PP
-The \fIproc\fR and \fInreProc\fR function are expected to conform to
-all the rules set forth for the \fIproc\fR argument to
-\fBTcl_CreateObjCommand\fR(3) (\fIq.v.\fR).
+\fBTcl_NREvalObj\fR pushes a function that is like \fBTcl_EvalObjEx\fR but
+consumes no space on the C stack.
 .PP
-When a command that is written to cope with evaluation via trampoline
-is invoked without a trampoline on the stack, it will usually respond
-to the invocation by creating a trampoline and calling the
-trampoline-enabled implementation of the same command. This call is done by
-means of \fBTcl_NRCallObjProc\fR. In the call to
-\fBTcl_NRCallObjProc\fR, the \fIinterp\fR, \fIclientData\fR,
-\fIobjc\fR and \fIobjv\fR parameters should be the same ones that were
-passed to \fIproc\fR. The \fInreProc\fR parameter should designate the
-trampoline-enabled implementation of the command.
+\fBTcl_NREvalObjv\fR pushes a function that is like \fBTcl_EvalObjv\fR but
+consumes no space on the C stack.
 .PP
-\fBTcl_NREvalObj\fR arranges for the script contained in \fIobjPtr\fR
-to be evaluated in the interpreter designated by \fIinterp\fR after
-the current command (which must be trampoline-enabled) returns. It is
-the method by which a command may invoke a script without consuming
-space on the C stack. Similarly, \fBTcl_NREvalObjv\fR arranges to
-invoke a single Tcl command whose words have already been separated
-and substituted. The \fIobjc\fR and \fIobjv\fR parameters give the
-words of the command to be evaluated when execution reaches the
-trampoline.
+\fBTcl_NRCmdSwap\fR is like \fBTcl_NREvalObjv\fR, but uses \fIcmd\fR, a token
+previously returned by \fBTcl_CreateObjCommand\fR or
+\fBTcl_GetCommandFromObj\fR, instead of resolving the first word of \fIobjv\fR.
+.  The name of this command must be the same as \fIobjv[0]\fR.
 .PP
-\fBTcl_NRCmdSwap\fR allows for trampoline evaluation of a command whose
-resolution is already known.  The \fIcmd\fR parameter gives a
-\fBTcl_Command\fR token (returned from \fBTcl_CreateObjCommand\fR or
-\fBTcl_GetCommandFromObj\fR) identifying the command to be invoked in
-the trampoline; this command must match the word in \fIobjv[0]\fR.
-The remaining arguments are as for \fBTcl_NREvalObjv\fR.
+\fBTcl_NRExprObj\fR pushes a function that evaluates \fIobjPtr\fR as an
+expression in the same manner as \fBTcl_ExprObj\fR but without consuming space
+on the C stack.
 .PP
-\fBTcl_NREvalObj\fR, \fBTcl_NREvalObjv\fR and \fBTcl_NRCmdSwap\fR
-all accept a \fIflags\fR parameter, which is an OR-ed-together set of
-bits to control evaluation. At the present time, the only supported flag
-available to callers is \fBTCL_EVAL_GLOBAL\fR.
-.\" TODO: Again, this is a lie. Do we want to explain TCL_EVAL_INVOKE
-.\"       and TCL_EVAL_NOERR?
-If the \fBTCL_EVAL_GLOBAL\fR flag is set, the script or command is
-evaluated in the global namespace. If it is not set, it is evaluated
-in the current namespace.
+All of the functions return \fBTCL_OK\fR if the evaluation of the script,
+command, or expression has been scheduled successfully.  Otherwise (for example
+if the command name cannot be resolved), they return \fBTCL_ERROR\fR and store
+a message as the interpreter's result.
 .PP
-\fBTcl_NRExprObj\fR arranges for the expression contained in \fIobjPtr\fR
-to be evaluated in the interpreter designated by \fIinterp\fR after
-the current command (which must be trampoline-enabled) returns. It is
-the method by which a command may evaluate a Tcl expression without consuming
-space on the C stack.  The argument \fIresultPtr\fR is a pointer to an
-unshared Tcl_Obj where the result of expression evaluation is to be written.
-If expression evaluation returns any code other than TCL_OK, the
-\fIresultPtr\fR value is left untouched.
-.PP
-All of the routines return \fBTCL_OK\fR if command or expression invocation
-has been scheduled successfully. If for any reason the scheduling cannot
-be completed (for example, if the interpreter is unable to find
-the requested command), they return \fBTCL_ERROR\fR with an
-appropriate message left in the interpreter's result.
-.PP
-\fBTcl_NRAddCallback\fR arranges to have a C function called when the
-current trampoline-enabled command in the Tcl interpreter designated
-by \fIinterp\fR returns.  The \fIpostProcPtr\fR argument is a pointer
-to the callback function, which must have arguments and return value
-consistent with the \fBTcl_NRPostProc\fR data type:
+\fBTcl_NRAddCallback\fR pushes \fIpostProcPtr\fR.  The signature for
+\fBTcl_NRPostProc\fR is:
 .PP
 .CS
 typedef int
@@ -185,25 +135,13 @@ typedef int
        int \fIresult\fR);
 .CE
 .PP
-When the trampoline invokes the callback function, the \fIdata\fR
-parameter will point to an array containing the four one-word
-quantities that were passed to \fBTcl_NRAddCallback\fR in the
-\fIdata0\fR through \fIdata3\fR parameters. The Tcl interpreter will
-be designated by the \fIinterp\fR parameter, and the \fIresult\fR
-parameter will contain the result (\fBTCL_OK\fR, \fBTCL_ERROR\fR,
-\fBTCL_RETURN\fR, \fBTCL_BREAK\fR or \fBTCL_CONTINUE\fR) that was
-returned by the command evaluation. The callback function is expected,
-in turn, either to return a \fIresult\fR to control further evaluation.
-.PP
-Multiple \fBTcl_NRAddCallback\fR invocations may request multiple
-callbacks, which may be to the same or different callback
-functions. If multiple callbacks are requested, they are executed in
-last-in, first-out order, that is, the most recently requested
-callback is executed first.
+\fIdata\fR is a pointer to an array containing \fIdata0\fR through \fIdata3\fR.
+\fIresult\fR is the value returned by the previous function implementing part
+the routine.
 .SH EXAMPLE
 .PP
-The usual pattern for Tcl commands that invoke other Tcl commands
-is something like:
+The following command uses \fBTcl_EvalObjEx\fR, which consumes space on the C
+stack, to evalute a script:
 .PP
 .CS
 int
@@ -228,28 +166,17 @@ int
        \fITheCmdOldObjProc\fR, clientData, TheCmdDeleteProc);
 .CE
 .PP
-To enable a command like this one for trampoline-based evaluation,
-it must be split into three pieces:
-.IP \(bu
-A non-trampoline implementation, \fITheCmdNewObjProc\fR,
-which will simply create a trampoline
-and invoke the trampoline-based implementation.
-.IP \(bu
-A trampoline-enabled implementation, \fITheCmdNRObjProc\fR.  This
-function will perform the initialization, request that the trampoline
-call the postprocessing routine after command evaluation, and finally,
-request that the trampoline call the inner command.
-.IP \(bu
-A postprocessing routine, \fITheCmdPostProc\fR. This function will
-perform the postprocessing formerly done after the return from the
-inner command in \fITheCmdObjProc\fR.
-.PP
-The non-trampoline implementation is simple and stylized, containing
-a single statement:
+To avoid consuming space on the C stack, \fITheCmdOldObjProc\fR is renamed to
+\fITheCmdNRObjProc\fR and the postprocessing step is split into a separate
+function, \fITheCmdPostProc\fR, which is pushed onto the function stack.
+\fITcl_EvalObjEx\fR is replaced with \fITcl_NREvalObj\fR, which uses a
+trampoline instead of consuming space on the C stack.  A new version of
+\fITheCmdOldObjProc\fR is just a a wrapper that uses \fBTcl_NRCallObjProc\fR to
+call \fITheCmdNRObjProc\fR:
 .PP
 .CS
 int
-\fITheCmdNewObjProc\fR(
+\fITheCmdOldObjProc\fR(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
@@ -260,9 +187,6 @@ int
 }
 .CE
 .PP
-The trampoline-enabled implementation requests postprocessing,
-and returns to the trampoline requesting command evaluation.
-.PP
 .CS
 int
 \fITheCmdNRObjProc\fR
@@ -284,9 +208,6 @@ int
 }
 .CE
 .PP
-The postprocessing procedure does whatever the original command did
-upon return from the inner evaluation.
-.PP
 .CS
 int
 \fITheCmdNRPostProc\fR(
@@ -303,26 +224,13 @@ int
 }
 .CE
 .PP
-If \fItheCommand\fR is a command that results in multiple commands or
-scripts being evaluated, its postprocessing routine may schedule
-additional postprocessing and then request another command evaluation
-by means of \fBTcl_NREvalObj\fR or one of the other evaluation
-routines. Looping and sequencing constructs may be implemented in this way.
+Any function comprising a routine can push other functions, making it possible
+implement looping and sequencing constructs using the function stack.
 .PP
-Finally, to install a trampoline-enabled command in the interpreter,
-\fBTcl_NRCreateCommand\fR is used in place of
-\fBTcl_CreateObjCommand\fR.  It accepts two command procedures instead
-of one. The first is for use when no trampoline is yet on the stack,
-and the second is for use when there is already a trampoline in place.
-.PP
-.CS
-\fBTcl_NRCreateCommand\fR(interp, "theCommand",
-        \fITheCmdNewObjProc\fR, \fITheCmdNRObjProc\fR, clientData,
-        TheCmdDeleteProc);
-.CE
 .SH "SEE ALSO"
 Tcl_CreateCommand(3), Tcl_CreateObjCommand(3), Tcl_EvalObjEx(3), Tcl_GetCommandFromObj(3), Tcl_ExprObj(3)
 .SH KEYWORDS
 stackless, nonrecursive, execute, command, global, value, result, script
 .SH COPYRIGHT
-Copyright (c) 2008 by Kevin B. Kenny
+Copyright (c) 2008 by Kevin B. Kenny.
+Copyright (c) 2018 by Nathan Coulter.
@@ -3,10 +3,10 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 '\" Note that some of these functions do not seem to belong, but they
 '\" were all introduced with the same TIP (#139)
-'\"
+'\" 
 .TH Tcl_Namespace 3 8.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -257,7 +257,7 @@ The \fBincr\fR command first gets an integer from \fIx\fR's value
 by calling \fBTcl_GetIntFromObj\fR.
 This procedure checks whether the value is already an integer value.
 Since it is not, it converts the value
-by setting the value's \fIinternalRep.longValue\fR member
+by setting the value's internal representation
 to the integer \fB123\fR
 and setting the value's \fItypePtr\fR
 to point to the integer Tcl_ObjType structure.
@@ -4,12 +4,12 @@
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
-.TH Tcl_OpenTcpClient 3 8.7 Tcl "Tcl Library Procedures"
+.TH Tcl_OpenTcpClient 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Tcl_OpenTcpClient, Tcl_MakeTcpClientChannel, Tcl_OpenTcpServer, Tcl_OpenTcpServerEx \- procedures to open channels using TCP sockets
+Tcl_OpenTcpClient, Tcl_MakeTcpClientChannel, Tcl_OpenTcpServer \- procedures to open channels using TCP sockets
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h> \fR
@@ -23,9 +23,6 @@ Tcl_Channel
 Tcl_Channel
 \fBTcl_OpenTcpServer\fR(\fIinterp, port, myaddr, proc, clientData\fR)
 .sp
-Tcl_Channel
-\fBTcl_OpenTcpServerEx\fR(\fIinterp, service, myaddr, flags, proc, clientData\fR)
-.sp
 .SH ARGUMENTS
 .AS Tcl_TcpAcceptProc clientData
 .AP Tcl_Interp *interp in
@@ -33,9 +30,6 @@ Tcl interpreter to use for error reporting.  If non-NULL and an
 error occurs, an error message is left in the interpreter's result.
 .AP int port in
 A port number to connect to as a client or to listen on as a server.
-.AP "const char" *service in
-A string specifying the port number to connect to as a client or to listen on as
- a server.
 .AP "const char" *host in
 A string specifying a host name or address for the remote end of the connection.
 .AP int myport in
@@ -47,9 +41,6 @@ for the local end of the connection.  If NULL, a default interface is
 chosen.
 .AP int async in
 If nonzero, the client socket is connected asynchronously to the server.
-.AP "unsigned int" flags in
-ORed combination of \fBTCL_TCPSERVER\fR flags that specify additional
-informations about the socket being created.
 .AP ClientData sock in
 Platform-specific handle for client TCP socket.
 .AP Tcl_TcpAcceptProc *proc in
@@ -139,7 +130,7 @@ for the new channel, \fIhostName\fR points to a string containing
 the name of the client host making the connection, and \fIport\fR
 will contain the client's port number.
 The new channel
-is opened for both input and output.
+is opened for both input and output. 
 If \fIproc\fR raises an error, the connection is closed automatically.
 \fIProc\fR has no return value, but if it wishes to reject the
 connection it can close \fIchannel\fR.
@@ -167,11 +158,6 @@ register it, use \fBTcl_RegisterChannel\fR.
 If one of the standard channels, \fBstdin\fR, \fBstdout\fR or \fBstderr\fR was
 previously closed, the act of creating the new channel also assigns it as a
 replacement for the standard channel.
-.SS TCL_OPENTCPSERVEREX
-.PP
-\fBTcl_OpenTcpServerEx\fR behaviour is identical to \fBTcl_OpenTcpServer\fR but
-gives more flexibility to the user by providing a mean to further customize some
-aspects of the socket via the \fIflags\fR parameter.
 .SH "PLATFORM ISSUES"
 .PP
 On Unix platforms, the socket handle is a Unix file descriptor as
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_ParseArgsObjv 3 8.6 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_Preserve 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_PrintDouble 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_RecordAndEvalObj 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -32,6 +32,8 @@ the command at global level instead of the current stack level.
 .PP
 \fBTcl_RecordAndEvalObj\fR is invoked to record a command as an event
 on the history list and then execute it using \fBTcl_EvalObjEx\fR
+(or \fBTcl_GlobalEvalObj\fR if the \fBTCL_EVAL_GLOBAL\fR bit is set
+in \fIflags\fR).
 It returns a completion code such as \fBTCL_OK\fR just like \fBTcl_EvalObjEx\fR,
 as well as a result value containing additional information
 (a result value or error message)
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_RecordAndEval 3 7.4 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -54,9 +54,9 @@ is called, Tcl will take care of memory management.
 .PP
 The second triplet stores the snapshot of only the interpreter
 result (not its complete state) in memory allocated by the caller.
-These routines are passed a pointer to a \fBTcl_SavedResult\fR structure
+These routines are passed a pointer to \fBTcl_SavedResult\fR
 that is used to store enough information to restore the interpreter result.
-This structure can be allocated on the stack of the calling
+\fBTcl_SavedResult\fR can be allocated on the stack of the calling
 procedure.  These routines do not save the state of any error
 information in the interpreter (e.g. the \fB\-errorcode\fR or
 \fB\-errorinfo\fR return options, when an error is in progress).
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SetErrno 3 8.3 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SetRecursionLimit 3 7.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SignalId 3 8.3 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_Sleep 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SplitList 3 8.0 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SplitPath 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_StaticPackage 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH "Standard Channels" 3 7.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_StringMatch 3 8.5 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH Tcl_SubstObj 3 8.4 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -1,8 +1,8 @@
-'\"
+'\" 
 '\" Copyright (c) 1992-1999 Karl Lehenbauer and Mark Diekhans.
 '\" Copyright (c) 2000 by Scriptics Corporation.
 '\" All rights reserved.
-'\"
+'\" 
 .TH TCL_MEM_DEBUG 3 8.1 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH TclZlib 3 8.6 Tcl "Tcl Library Procedures"
 .so man.macros
 .BS
@@ -33,7 +33,7 @@ int
 .SH ARGUMENTS
 .AS char *str in/out
 .AP int ch in
-The Tcl_UniChar to be converted.
+The Unicode character to be converted.
 .AP char *str in/out
 Pointer to UTF-8 string to be converted in place.
 .BE
@@ -53,14 +53,11 @@ The Tcl_UniChar to be examined.

 .SH DESCRIPTION
 .PP
-All of the routines described examine Tcl_UniChars and return a
+All of the routines described examine Unicode characters and return a
 boolean value. A non-zero return value means that the character does
 belong to the character class associated with the called routine. The
 rest of this document just describes the character classes associated
 with the various routines.
-.PP
-Note: A Tcl_UniChar is a Unicode character represented as an unsigned,
-fixed-size quantity.

 .SH "CHARACTER CLASSES"
 .PP
@@ -77,7 +77,7 @@ int
 Buffer in which the UTF-8 representation of the Tcl_UniChar is stored.  At most
 \fBTCL_UTF_MAX\fR bytes are stored in the buffer.
 .AP int ch in
-The Tcl_UniChar to be converted or examined.
+The Unicode character to be converted or examined.
 .AP Tcl_UniChar *chPtr out
 Filled with the Tcl_UniChar represented by the head of the UTF-8 string.
 .AP "const char" *src in
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH break n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH case n 7.0 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH cd n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -89,9 +89,10 @@ have 59 or 61 seconds.
 .TP
 \fIunit\fR
 One of the words, \fBseconds\fR, \fBminutes\fR, \fBhours\fR,
-\fBdays\fR, \fBweekdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR.
-Used in conjunction with \fIcount\fR to identify an interval of time,
-for example, \fI3 seconds\fR or \fI1 year\fR.
+\fBdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR, or
+any unique prefix of such a word. Used in conjunction with \fIcount\fR
+to identify an interval of time, for example, \fI3 seconds\fR or
+\fI1 year\fR.
 .SS "OPTIONS"
 .TP
 \fB\-base\fR time
@@ -174,7 +175,8 @@ given as its first argument.  The remaining arguments (other than the
 possible \fB\-timezone\fR, \fB\-locale\fR and \fB\-gmt\fR options)
 are integers and keywords in alternation, where the keywords are chosen
 from \fBseconds\fR, \fBminutes\fR, \fBhours\fR,
-\fBdays\fR, \fBweekdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR.
+\fBdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR, or
+any unique prefix of such a word.
 .PP
 Addition of seconds, minutes and hours is fairly straightforward;
 the given time increment (times sixty for minutes, or 3600 for hours)
@@ -211,8 +213,7 @@ the given time to a calendar day and time of day in the appropriate
 time zone and locale.  The requisite number of days (weeks are converted
 to days by multiplying by seven) is added to the calendar day, and
 the date and time are then converted back to a count of seconds from
-the epoch time.  The \fBweekdays\fR keyword is similar to \fBdays\fR,
-with the only difference that weekends - Saturdays and Sundays - are skipped.
+the epoch time.
 .PP
 Adding and subtracting a given number of days across the point that
 the time changes at the start or end of summer time (Daylight Saving Time)
@@ -452,6 +453,19 @@ If this situation occurs, the first occurrence of the time is chosen.
 (For this reason, it is wise to have the input string contain the
 time zone when converting local times.  This caveat does not apply to
 UTC times.)
+.PP
+If the interpretation of the groups yields an impossible time because
+a field is out of range, enough of that field's unit will be added to
+or subtracted from the time to bring it in range. Thus, if attempting to
+scan or format day 0 of the month, one day will be subtracted from day
+1 of the month, yielding the last day of the previous month.
+.PP
+If the interpretation of the groups yields an impossible time because
+a Daylight Saving Time change skips over that time, or an ambiguous
+time because a Daylight Saving Time change skips back so that the clock
+observes the given time twice, and no time zone specifier (\fB%z\fR
+or \fB%Z\fR) is present in the format, the time is interpreted as
+if the clock had not changed. 
 .SH "FORMAT GROUPS"
 .PP
 The following format groups are recognized by the \fBclock scan\fR and
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH close n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH concat n 8.3 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH continue n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -23,7 +23,7 @@ exception to occur.
 The exception causes the current script to be aborted
 out to the innermost containing loop command, which then
 continues with the next iteration of the loop.
-Continue exceptions are also handled in a few other situations, such
+Catch exceptions are also handled in a few other situations, such
 as the \fBcatch\fR command and the outermost scripts of procedure
 bodies.
 .SH EXAMPLE
@@ -33,9 +33,9 @@ as the empty string, a new name is chosen. Names, unless specified, are
 chosen with the same algorithm used by the \fBnew\fR method of
 \fBoo::class\fR.
 .VE TIP473
-The copied object will be of the same class as the source object, and will have
-all its per-object methods copied. If it is a class, it will also have all the
-class methods in the class copied, but it will not have any of its instances
+The copied object will be of the same class as the source object, and will have 
+all its per-object methods copied. If it is a class, it will also have all the 
+class methods in the class copied, but it will not have any of its instances 
 copied.
 .PP
 .VS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH coroutine n 8.6 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -50,7 +50,7 @@ being constructed. Within the constructor, the \fBnext\fR command should be
 used to call the superclasses' constructors. If \fIbodyScript\fR is the empty
 string, the constructor will be deleted.
 .TP
-\fBdeletemethod\fI name\fR ?\fIname ...\fR
+\fBdeletemethod\fI name\fR ?\fIname ...\fR?
 .
 This deletes each of the methods called \fIname\fR from a class. The methods
 must have previously existed in that class. Does not affect the superclasses
@@ -142,8 +142,6 @@ be afterwards.
 \fBself\fI subcommand arg ...\fR
 .TP
 \fBself\fI script\fR
-.TP
-\fBself\fR
 .
 This command is equivalent to calling \fBoo::objdefine\fR on the class being
 defined (see \fBCONFIGURING OBJECTS\fR below for a description of the
@@ -153,13 +151,6 @@ and
 .QW "\fBoo::define \fIcls \fBself \fIsubcommand ...\fR"
 operates identically to
 .QW "\fBoo::objdefine \fIcls subcommand ...\fR" .
-.RS
-.PP
-.VS TIP470
-If no arguments at all are used, this gives the name of the class currently
-being configured.
-.VE TIP470
-.RE
 .TP
 \fBsuperclass\fR ?\fI\-slotOperation\fR? ?\fIclassName ...\fR?
 .VS
@@ -274,12 +265,6 @@ not previously refer to a method in that object. Does not affect the classes
 that the object is an instance of. Does not change the export status of the
 method; if it was exported before, it will be afterwards.
 .TP
-\fBself \fR
-.
-.VS TIP470
-This gives the name of the object currently being configured.
-.VE TIP470
-.TP
 \fBunexport\fI name \fR?\fIname ...\fR?
 .
 This arranges for each of the named methods, \fIname\fR, to be not exported
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH eof n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH eval n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -217,6 +217,19 @@ information is instead sent to the console, if one is present, or is
 discarded.
 .RS
 .PP
+Note that the current escape resp. quoting of arguments for windows works only
+with executables using CommandLineToArgv, CRT-library or similar, as well as
+with the windows batch files (excepting the newline, see below).
+Although it is the common escape algorithm, but, in fact, the way how the
+executable parses the command-line (resp. splits it into single arguments)
+is decisive.
+.PP
+Unfortunately, there is currently no way to supply newline character within 
+an argument to the batch files (\fB.cmd\fR or \fB.bat\fR) or to the command 
+processor (\fBcmd.exe /c\fR), because this causes truncation of command-line
+(also the argument chain) on the first newline character. 
+But it works properly with an executable (using CommandLineToArgv, etc).
+.PP
 The Tk console text widget does not provide real standard IO capabilities.
 Under Tk, when redirecting from standard input, all applications will see an
 immediate end-of-file; information redirected to standard output or standard
@@ -409,6 +422,10 @@ that sometimes pop up:
 With the file \fIcmp.bat\fR looking something like:
 .PP
 .CS
+@gcc %*
+.CE
+or like another variant using single parameters:
+.CS
@gcc %1 %2 %3 %4 %5 %6 %7 %8 %9
 .CE
 .SS "WORKING WITH COMMAND BUILT-INS"
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH exit n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -17,14 +17,14 @@ expr \- Evaluate an expression
 .BE
 .SH DESCRIPTION
 .PP
-Concatenates \fIarg\fRs, separated by a space, into an expression, and evaluates
-that expression, returning its value.
-The operators permitted in an expression include a subset of
+Concatenates \fIarg\fRs (adding separator spaces between them),
+evaluates the result as a Tcl expression, and returns the value.
+The operators permitted in Tcl expressions include a subset of
 the operators permitted in C expressions.  For those operators
 common to both Tcl and C, Tcl applies the same meaning and precedence
 as the corresponding C operators.
-The value of an expression is often a numeric result, either an integer or a
-floating-point value, but may also be a non-numeric value.
+Expressions almost always yield numeric results
+(integer or floating-point values).
 For example, the expression
 .PP
 .CS
@@ -32,69 +32,78 @@ For example, the expression
 .CE
 .PP
 evaluates to 14.2.
-Expressions differ from C expressions in the way that
-operands are specified.  Expressions also support
-non-numeric operands, string comparisons, and some
+Tcl expressions differ from C expressions in the way that
+operands are specified.  Also, Tcl expressions support
+non-numeric operands and string comparisons, as well as some
 additional operators not found in C.
-.PP
-When an expression evaluates to an integer, the value is the decimal form of
-the integer, and when an expression evaluates to a floating-point number, the
-value is the form produced by the \fB%g\fR format specifier of Tcl's
-\fBformat\fR command.
 .SS OPERANDS
 .PP
-An expression consists of a combination of operands, operators, parentheses and
-commas, possibly with whitespace between any of these elements, which is
-ignored.
-An integer operand may be specified in decimal (the normal case, the optional
-first two characters are \fB0d\fR), binary
-(the first two characters are \fB0b\fR), octal
-(the first two characters are \fB0o\fR), or hexadecimal
-(the first two characters are \fB0x\fR) form.  For
-compatibility with older Tcl releases, an operand that begins with \fB0\fR is
-interpreted as an octal integer even if the second character is not \fBo\fR.
-A floating-point number may be specified in any of several
-common decimal formats, and may use the decimal point \fB.\fR,
-\fBe\fR or \fBE\fR for scientific notation, and
-the sign characters \fB+\fR and \fB\-\fR.  The
-following are all valid floating-point numbers:  2.1, 3., 6e4, 7.91e+16.
-The strings \fBInf\fR
-and \fBNaN\fR, in any combination of case, are also recognized as floating point
-values.  An operand that doesn't have a numeric interpretation must be quoted
-with either braces or with double quotes.
+A Tcl expression consists of a combination of operands, operators,
+parentheses and commas.
+White space may be used between the operands and operators and
+parentheses (or commas); it is ignored by the expression's instructions.
+Where possible, operands are interpreted as integer values.
+Integer values may be specified in decimal (the normal case), in binary
+(if the first two characters of the operand are \fB0b\fR), in octal
+(if the first two characters of the operand are \fB0o\fR), or in hexadecimal
+(if the first two characters of the operand are \fB0x\fR).  For
+compatibility with older Tcl releases, an octal integer value is also
+indicated simply when the first character of the operand is \fB0\fR,
+whether or not the second character is also \fBo\fR.
+If an operand does not have one of the integer formats given
+above, then it is treated as a floating-point number if that is
+possible.  Floating-point numbers may be specified in any of several
+common formats making use of the decimal digits, the decimal point \fB.\fR,
+the characters \fBe\fR or \fBE\fR indicating scientific notation, and
+the sign characters \fB+\fR or \fB\-\fR.  For example, all of the
+following are valid floating-point numbers:  2.1, 3., 6e4, 7.91e+16.
+Also recognized as floating point values are the strings \fBInf\fR
+and \fBNaN\fR making use of any case for each character.
+If no numeric interpretation is possible (note that all literal
+operands that are not numeric or boolean must be quoted with either
+braces or with double quotes), then an operand is left as a string
+(and only a limited set of operators may be applied to it).
 .PP
-An operand may be specified in any of the following ways:
+Operands may be specified in any of the following ways:
 .IP [1]
 As a numeric value, either integer or floating-point.
 .IP [2]
 As a boolean value, using any form understood by \fBstring is\fR
 \fBboolean\fR.
 .IP [3]
-As a variable, using standard \fB$\fR notation.
-The value of the variable is then the value of the operand.
+As a Tcl variable, using standard \fB$\fR notation.
+The variable's value will be used as the operand.
 .IP [4]
 As a string enclosed in double-quotes.
-Backslash, variable, and command substitution are performed as described in
-\fBTcl\fR.
+The expression parser will perform backslash, variable, and
+command substitutions on the information between the quotes,
+and use the resulting value as the operand
 .IP [5]
 As a string enclosed in braces.
-The operand is treated as a braced value as described in \fBTcl\fR.
+The characters between the open brace and matching close brace
+will be used as the operand without any substitutions.
 .IP [6]
 As a Tcl command enclosed in brackets.
-Command substitution is performed as described in \fBTcl\fR.
+The command will be executed and its result will be used as
+the operand.
 .IP [7]
-As a mathematical function such as \fBsin($x)\fR, whose arguments have any of the above
-forms for operands.  See \fBMATH FUNCTIONS\fR below for
+As a mathematical function whose arguments have any of the above
+forms for operands, such as \fBsin($x)\fR.  See \fBMATH FUNCTIONS\fR below for
 a discussion of how mathematical functions are handled.
 .PP
-Because \fBexpr\fR parses and performs substitutions on values that have
-already been parsed and substituted by \fBTcl\fR, it is usually best to enclose
-expressions in braces to avoid the first round of substitutions by
-\fBTcl\fR.
+Where the above substitutions occur (e.g. inside quoted strings), they
+are performed by the expression's instructions.
+However, the command parser may already have performed one round of
+substitution before the expression processor was called.
+As discussed below, it is usually best to enclose expressions
+in braces to prevent the command parser from performing substitutions
+on the contents.
 .PP
-Below are some examples of simple expressions where the value of \fBa\fR is 3
-and the value of \fBb\fR is 6.  The command on the left side of each line
-produces the value on the right side.
+For some examples of simple expressions, suppose the variable
+\fBa\fR has the value 3 and
+the variable \fBb\fR has the value 6.
+Then the command on the left side of each of the lines below
+will produce the value on the right side of the line:
 .PP
 .CS
 .ta 6c
@@ -105,41 +114,34 @@ produces the value on the right side.
 .CE
 .SS OPERATORS
 .PP
-For operators having both a numeric mode and a string mode, the numeric mode is
-chosen when all operands have a numeric interpretation.  The integer
-interpretation of an operand is preferred over the floating-point
-interpretation.  To ensure string operations on arbitrary values it is generally a
-good idea to use \fBeq\fR, \fBne\fR, or the \fBstring\fR command instead of
-more versatile operators such as \fB==\fR.
-.PP
-Unless otherwise specified, operators accept non-numeric operands.  The value
-of a boolean operation is 1 if true, 0 otherwise.  See also \fBstring is\fR
-\fBboolean\fR.  The valid operators, most of which are also available as
-commands in the \fBtcl::mathop\fR namespace (see \fBmathop\fR(n)), are listed
-below, grouped in decreasing order of precedence:
+The valid operators (most of which are also available as commands in
+the \fBtcl::mathop\fR namespace; see the \fBmathop\fR(n) manual page
+for details) are listed below, grouped in decreasing order of precedence:
 .TP 20
 \fB\-\0\0+\0\0~\0\0!\fR
 .
-Unary minus, unary plus, bit-wise NOT, logical NOT.  These operators
-may only be applied to numeric operands, and bit-wise NOT may only be
-applied to integers.
+Unary minus, unary plus, bit-wise NOT, logical NOT.  None of these operators
+may be applied to string operands, and bit-wise NOT may be
+applied only to integers.
 .TP 20
 \fB**\fR
 .
-Exponentiation.  Valid for numeric operands.
+Exponentiation.  Valid for any numeric operands.
 .TP 20
 \fB*\0\0/\0\0%\fR
 .
-Multiply and divide, which are valid for numeric operands, and remainder, which
-is valid for integers.  The remainder, an absolute value smaller than the
-absolute value of the divisor, has the same sign as the divisor.
+Multiply, divide, remainder.  None of these operators may be
+applied to string operands, and remainder may be applied only
+to integers.
+The remainder will always have the same sign as the divisor and
+an absolute value smaller than the absolute value of the divisor.
 .RS
 .PP
-When applied to integers, division and remainder can be
-considered to partition the number line into a sequence of
-adjacent non-overlapping pieces, where each piece is the size of the divisor;
-the quotient identifies which piece the dividend lies within, and the
-remainder identifies where within that piece the dividend lies. A
+When applied to integers, the division and remainder operators can be
+considered to partition the number line into a sequence of equal-sized
+adjacent non-overlapping pieces where each piece is the size of the divisor;
+the division result identifies which piece the divisor lay within, and the
+remainder result identifies where within that piece the divisor lay. A
 consequence of this is that the result of
 .QW "-57 \fB/\fR 10"
 is always -6, and the result of
@@ -149,157 +151,177 @@ is always 3.
 .TP 20
 \fB+\0\0\-\fR
 .
-Add and subtract.  Valid for numeric operands.
+Add and subtract.  Valid for any numeric operands.
 .TP 20
 \fB<<\0\0>>\fR
 .
-Left and right shift.  Valid for integers.
+Left and right shift.  Valid for integer operands only.
 A right shift always propagates the sign bit.
 .TP 20
 \fB<\0\0>\0\0<=\0\0>=\fR
 .
-Boolean less than, greater than, less than or equal, and greater than or equal.
+Boolean less, greater, less than or equal, and greater than or equal.
+Each operator produces 1 if the condition is true, 0 otherwise.
+These operators may be applied to strings as well as numeric operands,
+in which case string comparison is used.
 .TP 20
 \fB==\0\0!=\fR
 .
-Boolean equal and not equal.
+Boolean equal and not equal.  Each operator produces a zero/one result.
+Valid for all operand types.
 .TP 20
 \fBeq\0\0ne\fR
 .
-Boolean string equal and string not equal.
+Boolean string equal and string not equal.  Each operator produces a
+zero/one result.  The operand types are interpreted only as strings.
 .TP 20
 \fBin\0\0ni\fR
 .
-List containment and negated list containment.  The first argument is
-interpreted as a string, the second as a list.  \fBin\fR tests for membership
-in the list, and \fBni\fR is the inverse.
+List containment and negated list containment.  Each operator produces
+a zero/one result and treats its first argument as a string and its
+second argument as a Tcl list.  The \fBin\fR operator indicates
+whether the first argument is a member of the second argument list;
+the \fBni\fR operator inverts the sense of the result.
 .TP 20
 \fB&\fR
 .
-Bit-wise AND.  Valid for integer operands.
+Bit-wise AND.  Valid for integer operands only.
 .TP 20
 \fB^\fR
 .
-Bit-wise exclusive OR.  Valid for integer operands.
+Bit-wise exclusive OR.  Valid for integer operands only.
 .TP 20
 \fB|\fR
 .
-Bit-wise OR.  Valid for integer operands.
+Bit-wise OR.  Valid for integer operands only.
 .TP 20
 \fB&&\fR
 .
-Logical AND.  If both operands are true, the result is 1, or 0 otherwise.
-
+Logical AND.  Produces a 1 result if both operands are non-zero,
+0 otherwise.
+Valid for boolean and numeric (integers or floating-point) operands only.
 .TP 20
 \fB||\fR
 .
-Logical OR.  If both operands are false, the result is 0, or 1 otherwise.
+Logical OR.  Produces a 0 result if both operands are zero, 1 otherwise.
+Valid for boolean and numeric (integers or floating-point) operands only.
 .TP 20
 \fIx\fB?\fIy\fB:\fIz\fR
 .
-If-then-else, as in C.  If \fIx\fR is false , the result is the value of
-\fIy\fR.  Otherwise the result is the value of \fIz\fR.
+If-then-else, as in C.  If \fIx\fR
+evaluates to non-zero, then the result is the value of \fIy\fR.
+Otherwise the result is the value of \fIz\fR.
+The \fIx\fR operand must have a boolean or numeric value.
 .PP
-The exponentiation operator promotes types in the same way that the multiply
-and divide operators do, and the result is is the same as the result of
-\fBpow\fR.
-Exponentiation groups right-to-left within a precedence level. Other binary
-operators group left-to-right.  For example, the value of
+See the C manual for more details on the results
+produced by each operator.
+The exponentiation operator promotes types like the multiply and
+divide operators, and produces a result that is the same as the output
+of the \fBpow\fR function (after any type conversions.)
+All of the binary operators but exponentiation group left-to-right
+within the same precedence level; exponentiation groups right-to-left.  For example, the command
 .PP
 .CS
 \fBexpr\fR {4*2 < 7}
 .CE
 .PP
-is 0, while the value of
+returns 0, while
 .PP
 .CS
 \fBexpr\fR {2**3**2}
 .CE
 .PP
-is 512.
+returns 512.
 .PP
-As in C, \fB&&\fR, \fB||\fR, and \fB?:\fR feature
+The \fB&&\fR, \fB||\fR, and \fB?:\fR operators have
 .QW "lazy evaluation" ,
-which means that operands are not evaluated if they are
-not needed to determine the outcome.  For example, in
+just as in C, which means that operands are not evaluated if they are
+not needed to determine the outcome.  For example, in the command
 .PP
 .CS
 \fBexpr\fR {$v ? [a] : [b]}
 .CE
 .PP
-only one of \fB[a]\fR or \fB[b]\fR is evaluated,
-depending on the value of \fB$v\fR.  This is not true of the normal Tcl parser,
-so it is normally recommended to enclose the arguments to \fBexpr\fR in braces.
-Without braces, as in
-\fBexpr\fR $v ? [a] : [b]
-both \fB[a]\fR and \fB[b]\fR are evaluated before \fBexpr\fR is even called.
-.PP
-For more details on the results
-produced by each operator, see the documentation for C.
+only one of
+.QW \fB[a]\fR
+or
+.QW \fB[b]\fR
+will actually be evaluated,
+depending on the value of \fB$v\fR.  Note, however, that this is
+only true if the entire expression is enclosed in braces;  otherwise
+the Tcl parser will evaluate both
+.QW \fB[a]\fR
+and
+.QW \fB[b]\fR
+before invoking the \fBexpr\fR command.
 .SS "MATH FUNCTIONS"
 .PP
-A mathematical function such as \fBsin($x)\fR is replaced with a call to an ordinary
-Tcl command in the \fBtcl::mathfunc\fR namespace.  The evaluation
-of an expression such as
+When the expression parser encounters a mathematical function
+such as \fBsin($x)\fR, it replaces it with a call to an ordinary
+Tcl function in the \fBtcl::mathfunc\fR namespace.  The processing
+of an expression such as:
 .PP
 .CS
 \fBexpr\fR {sin($x+$y)}
 .CE
 .PP
-is the same in every way as the evaluation of
+is the same in every way as the processing of:
 .PP
 .CS
 \fBexpr\fR {[tcl::mathfunc::sin [\fBexpr\fR {$x+$y}]]}
 .CE
 .PP
-which in turn is the same as the evaluation of
+which in turn is the same as the processing of:
 .PP
 .CS
 tcl::mathfunc::sin [\fBexpr\fR {$x+$y}]
 .CE
 .PP
-\fBtcl::mathfunc::sin\fR is resolved as described in
-\fBNAMESPACE RESOLUTION\fR in the \fBnamespace\fR(n) documentation.   Given the
-default value of \fBnamespace path\fR, \fB[namespace
-current]::tcl::mathfunc::sin\fR or \fB::tcl::mathfunc::sin\fR are the typical
-resolutions.
+The executor will search for \fBtcl::mathfunc::sin\fR using the usual
+rules for resolving functions in namespaces. Either
+\fB::tcl::mathfunc::sin\fR or \fB[namespace
+current]::tcl::mathfunc::sin\fR will satisfy the request, and others
+may as well (depending on the current \fBnamespace path\fR setting).
 .PP
-As in C, a mathematical function may accept multiple arguments separated by commas. Thus,
+Some mathematical functions have several arguments, separated by commas like in C. Thus:
 .PP
 .CS
 \fBexpr\fR {hypot($x,$y)}
 .CE
 .PP
-becomes
+ends up as
 .PP
 .CS
 tcl::mathfunc::hypot $x $y
 .CE
 .PP
-See the \fBmathfunc\fR(n) documentation for the math functions that are
+See the \fBmathfunc\fR(n) manual page for the math functions that are
 available by default.
 .SS "TYPES, OVERFLOW, AND PRECISION"
 .PP
-When needed to guarantee exact performance, internal computations involving
-integers use the LibTomMath multiple precision integer library.  In Tcl releases
-prior to 8.5, integer calculations were performed using one of the C types
+All internal computations involving integers are done calling on the
+LibTomMath multiple precision integer library as required so that all
+integer calculations are performed exactly.  Note that in Tcl releases
+prior to 8.5, integer calculations were performed with one of the C types
 \fIlong int\fR or \fITcl_WideInt\fR, causing implicit range truncation
 in those calculations where values overflowed the range of those types.
-Any code that relied on these implicit truncations should instead call
-\fBint()\fR or \fBwide()\fR, which do truncate.
+Any code that relied on these implicit truncations will need to explicitly
+add \fBint()\fR or \fBwide()\fR function calls to expressions at the points
+where such truncation is required to take place.
 .PP
-Internal floating-point computations are
-performed using the \fIdouble\fR C type.
-When converting a string to floating-point value, exponent overflow is
+All internal computations involving floating-point are
+done with the C type \fIdouble\fR.
+When converting a string to floating-point, exponent overflow is
 detected and results in the \fIdouble\fR value of \fBInf\fR or
 \fB\-Inf\fR as appropriate.  Floating-point overflow and underflow
 are detected to the degree supported by the hardware, which is generally
-fairly reliable.
+pretty reliable.
 .PP
-Conversion among internal representations for integer, floating-point, and
-string operands is done automatically as needed.  For arithmetic computations,
-integers are used until some floating-point number is introduced, after which
-floating-point values are used.  For example,
+Conversion among internal representations for integer, floating-point,
+and string operands is done automatically as needed.
+For arithmetic computations, integers are used until some
+floating-point number is introduced, after which floating-point is used.
+For example,
 .PP
 .CS
 \fBexpr\fR {5 / 4}
@@ -313,62 +335,82 @@ returns 1, while
 .CE
 .PP
 both return 1.25.
-A floating-point result can be distinguished from an integer result by the
-presence of either
+Floating-point values are always returned with a
 .QW \fB.\fR
-or
+or an
 .QW \fBe\fR
-.PP
-. For example,
+so that they will not look like integer values.  For example,
 .PP
 .CS
 \fBexpr\fR {20.0/5.0}
 .CE
 .PP
 returns \fB4.0\fR, not \fB4\fR.
+.SS "STRING OPERATIONS"
+.PP
+String values may be used as operands of the comparison operators,
+although the expression evaluator tries to do comparisons as integer
+or floating-point when it can,
+i.e., when all arguments to the operator allow numeric interpretations,
+except in the case of the \fBeq\fR and \fBne\fR operators.
+If one of the operands of a comparison is a string and the other
+has a numeric value, a canonical string representation of the numeric
+operand value is generated to compare with the string operand.
+Canonical string representation for integer values is a decimal string
+format.  Canonical string representation for floating-point values
+is that produced by the \fB%g\fR format specifier of Tcl's
+\fBformat\fR command.  For example, the commands
+.PP
+.CS
+\fBexpr\fR {"0x03" > "2"}
+\fBexpr\fR {"0y" > "0x12"}
+.CE
+.PP
+both return 1.  The first comparison is done using integer
+comparison, and the second is done using string comparison.
+Because of Tcl's tendency to treat values as numbers whenever
+possible, it is not generally a good idea to use operators like \fB==\fR
+when you really want string comparison and the values of the
+operands could be arbitrary;  it is better in these cases to use
+the \fBeq\fR or \fBne\fR operators, or the \fBstring\fR command instead.
 .SH "PERFORMANCE CONSIDERATIONS"
 .PP
-Where an expression contains syntax that Tcl would otherwise perform
-substitutions on, enclosing an expression in braces or otherwise quoting it
-so that it's a static value allows the Tcl compiler to generate bytecode for
-the expression, resulting in better speed and smaller storage requirements.
-This also avoids issues that can arise if Tcl is allowed to perform
-substitution on the value before \fBexpr\fR is called.
+Enclose expressions in braces for the best speed and the smallest
+storage requirements.
+This allows the Tcl bytecode compiler to generate the best code.
+.PP
+As mentioned above, expressions are substituted twice:
+once by the Tcl parser and once by the \fBexpr\fR command.
+For example, the commands
 .PP
-In the following example, the value of the expression is 11 because the Tcl parser first
-substitutes \fB$b\fR and \fBexpr\fR then substitutes \fB$a\fR.  Enclosing the
-expression in braces would result in a syntax error.
 .CS
 set a 3
 set b {$a + 2}
 \fBexpr\fR $b*4
 .CE
 .PP
-
-When an expression is generated at runtime, like the one above is, the bytcode
-compiler must ensure that new code is generated each time the expression
-is evaluated.  This is the most costly kind of expression from a performance
-perspective.  In such cases, consider directly using the commands described in
-the \fBmathfunc\fR(n) or \fBmathop\fR(n) documentation instead of \fBexpr\fR.
-
-Most expressions are not formed at runtime, but are literal strings or contain
-substitutions that don't introduce other substitutions.  To allow the bytecode
-compiler to work with an expression as a string literal at compilation time,
-ensure that it contains no substitutions or that it is enclosed in braces or
-otherwise quoted to prevent Tcl from performing substitutions, allowing
-\fBexpr\fR to perform them instead.
+return 11, not a multiple of 4.
+This is because the Tcl parser will first substitute \fB$a + 2\fR for
+the variable \fBb\fR,
+then the \fBexpr\fR command will evaluate the expression \fB$a + 2*4\fR.
+.PP
+Most expressions do not require a second round of substitutions.
+Either they are enclosed in braces or, if not,
+their variable and command substitutions yield numbers or strings
+that do not themselves require substitutions.
+However, because a few unbraced expressions
+need two rounds of substitutions,
+the bytecode compiler must emit
+additional instructions to handle this situation.
+The most expensive code is required for
+unbraced expressions that contain command substitutions.
+These expressions must be implemented by generating new code
+each time the expression is executed.
+When the expression is unbraced to allow the substitution of a function or
+operator, consider using the commands documented in the \fBmathfunc\fR(n) or
+\fBmathop\fR(n) manual pages directly instead.
 .SH EXAMPLES
 .PP
-A numeric comparison whose result is 1:
-.CS
-\fBexpr\fR {"0x03" > "2"}
-.CE
-.PP
-A string comparison whose result is 1:
-.CS
-\fBexpr\fR {"0y" > "0x12"}
-.CE
-.PP
 Define a procedure that computes an
 .QW interesting
 mathematical function:
@@ -402,8 +444,8 @@ each other:
 puts "a and b are [\fBexpr\fR {$a eq $b ? {equal} : {different}}]"
 .CE
 .PP
-Set a variable indicating whether an environment variable is defined and has
-value of true:
+Set a variable to whether an environment variable is both defined at
+all and also set to a true boolean value:
 .PP
 .CS
 set isTrue [\fBexpr\fR {
@@ -1,4 +1,4 @@
-'\"
+'\" 
 '\" Copyright (c) 1996 Sun Microsystems, Inc.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
@@ -390,7 +390,7 @@ that use the third component do not attempt to perform tilde
 substitution.
 .RE
 .TP
-\fBfile stat \fIname varName\fR
+\fBfile stat  \fIname varName\fR
 .
 Invokes the \fBstat\fR kernel call on \fIname\fR, and uses the variable
 given by \fIvarName\fR to hold information returned from the kernel call.
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH flush n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH foreach n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -83,14 +83,12 @@ Specifies that the number should be padded on the left with
 zeroes instead of spaces.
 .TP 10
 \fB#\fR
-Requests an alternate output form. For \fBo\fR and \fBO\fR
+Requests an alternate output form. For \fBo\fR
 conversions it guarantees that the first digit is always \fB0\fR.
 For \fBx\fR or \fBX\fR conversions, \fB0x\fR or \fB0X\fR (respectively)
 will be added to the beginning of the result unless it is zero.
 For \fBb\fR conversions, \fB0b\fR
 will be added to the beginning of the result unless it is zero.
-For \fBd\fR conversions, \fB0d\fR will be added to the beginning
-of the result unless it is zero.
 For all floating-point conversions (\fBe\fR, \fBE\fR, \fBf\fR,
 \fBg\fR, and \fBG\fR) it guarantees that the result always
 has a decimal point.
@@ -171,7 +169,7 @@ for \fBx\fR and
 for \fBX\fR).
 .TP 10
 \fBb\fR
-Convert integer to binary string, using digits 0 and 1.
+Convert integer to unsigned binary string, using digits 0 and 1.
 .TP 10
 \fBc\fR
 Convert integer to the Unicode character it represents.
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH gets n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH history n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH if n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH incr n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -7,7 +7,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH info n 8.4 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -297,11 +297,10 @@ scripts are stored.
 This is actually the value of the \fBtcl_library\fR
 variable and may be changed by setting \fBtcl_library\fR.
 .TP
-\fBinfo loaded \fR?\fIinterp\fR? ?\fIpackage\fR?
+\fBinfo loaded \fR?\fIinterp\fR?
 .
-Returns the filename loaded as part of \fIpackage\fR. If \fIpackage\fR
-is not specified, returns a list describing all of the packages
-that have been loaded into \fIinterp\fR with the \fBload\fR command.
+Returns a list describing all of the packages that have been loaded into
+\fIinterp\fR with the \fBload\fR command.
 Each list element is a sub-list with two elements consisting of the
 name of the file from which the package was loaded and the name of
 the package.
@@ -5,7 +5,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH interp n 8.6 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH join n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -5,7 +5,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH lappend n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH lassign n 8.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -5,7 +5,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH list n "" Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH load n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH lrepeat n 8.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -30,13 +30,26 @@ list, and \fBend\fR refers to the last element of the list.
 If \fIlist\fR is empty, then \fIfirst\fR and \fIlast\fR are ignored.
 .PP
 If \fIfirst\fR is less than zero, it is considered to refer to before the
-first element of the list.  For non-empty lists, the element indicated
-by \fIfirst\fR must exist or \fIfirst\fR must indicate before the
+first element of the list.
+.VS TIP505
+If \fIfirst\fR indicates a position greater than the index of the last element
+of the list, it is treated as if it is an index one greater than the last
+element. This allows this command to append elements to the list.
+.VE TIP505
+For non-empty lists, the element indicated
+by \fIfirst\fR must exist, or \fIfirst\fR must indicate before the
 start of the list.
 .PP
 If \fIlast\fR is less than \fIfirst\fR, then any specified elements
 will be inserted into the list before the point specified by \fIfirst\fR
 with no elements being deleted.
+.VS TIP505
+If \fIlast\fR is greater than the index of the last item of the list, it is
+treated as if it is an index one greater than the last element. This means
+that if it is also greater than than \fIfirst\fR, all elements from
+\fIfirst\fR to the end of the list will be replaced, and otherwise the
+elements will be appended.
+.VE TIP505
 .PP
 The \fIelement\fR arguments specify zero or more new arguments to
 be added to the list in place of those that were deleted.
@@ -78,9 +91,26 @@ proc lremove {listVariable value} {
    set var [\fBlreplace\fR $var $idx $idx]
 }
 .CE
+.PP
+.VS TIP505
+Adding elements to the end of the list; note that \fBend+2\fR will initially
+be treated as if it is \fB6\fR here, but both that and \fB12345\fR are greater
+than the index of the final item so they behave identically:
+.PP
+.CS
+% set var {a b c d e}
+a b c d e
+% set var [\fBlreplace\fR $var 12345 end+2 f g h i]
+a b c d e f g h i
+.CE
+.VE TIP505
 .SH "SEE ALSO"
 list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n),
 lset(n), lrange(n), lsort(n),
 string(n)
 .SH KEYWORDS
 element, list, replace
+.\" Local variables:
+.\" mode: nroff
+.\" fill-column: 78
+.\" End:
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH lreverse n 8.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -303,7 +303,7 @@ used for qualified namespace or variable names.
 Sets or returns the unknown command handler for the current namespace.
 The handler is invoked when a command called from within the namespace
 cannot be found in the current namespace, the namespace's path nor in
-the global namespace.
+the global namespace. 
 The \fIscript\fR argument, if given, should be a well
 formed list representing a command name and optional arguments. When
 the handler is invoked, the full invocation line will be appended to the
@@ -138,7 +138,7 @@ before chaining from subclass, args = x 1 2 3 y
 in the superclass, args = a x 1 2 3 y b
 in the superclass, args = pureSynthesis
 after chaining from subclass
-before chaining from subclass, args =
+before chaining from subclass, args = 
 in the superclass, args = a b
 in the superclass, args = pureSynthesis
 after chaining from subclass
@@ -12,7 +12,6 @@
 package \- Facilities for package loading and version control
 .SH SYNOPSIS
 .nf
-\fBpackage files\fR \fIpackage\fR
 \fBpackage forget\fR ?\fIpackage package ...\fR?
 \fBpackage ifneeded \fIpackage version\fR ?\fIscript\fR?
 \fBpackage names\fR
@@ -44,13 +43,6 @@ primarily by system scripts that maintain the package database.
 The behavior of the \fBpackage\fR command is determined by its first argument.
 The following forms are permitted:
 .TP
-\fBpackage files\fR \fIpackage\fR
-.
-Lists all files forming part of \fIpackage\fR. Auto-loaded files are not
-included in this list, only files which were directly sourced during package
-initialization. The list order corresponds with the order in which the
-files were sourced.
-.TP
 \fBpackage forget\fR ?\fIpackage package ...\fR?
 .
 Removes all information about each specified package from this interpreter,
@@ -291,8 +283,8 @@ error.
 .PP
 When an interpreter is created, its initial selection mode value is set to
 .QW stable
-unless the environment variable \fBTCL_PKG_PREFER_LATEST\fR is set
-(to any value) or the Tcl package itself is unstable. Otherwise
+unless the environment variable \fBTCL_PKG_PREFER_LATEST\fR
+is set.  If that environment variable is defined (with any value) then
 the initial (and permanent) selection mode value is set to
 .QW latest .
 .RE
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1998-2000 by Scriptics Corporation.
 '\" All rights reserved.
-'\"
+'\" 
 .TH pkg::create n 8.3 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH pid n 7.0 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH "platform" n 1.0.4 platform "Tcl Bundled Packages"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH "platform::shell" n 1.1.4 platform::shell "Tcl Bundled Packages"
 .so man.macros
 .BS
@@ -3,7 +3,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH prefix n 8.6 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
@@ -4,7 +4,7 @@
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
+'\" 
 .TH puts n 7.5 Tcl "Tcl Built-In Commands"
 .so man.macros
 .BS
--- a/Show More
+++ b/Show More