Correct examples. [Bug 1982642]

2 files changed, 31 insertions, 17 deletions

diff --git a/doc/regexp.n b/doc/regexp.n
index 1e31131..e40b9c4 100644
--- a/doc/regexp.n
+++ b/doc/regexp.n
@@ -1,10 +1,11 @@
+'\" -*- nroff -*-
 '\"
 '\" Copyright (c) 1998 Sun Microsystems, Inc.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
-'\" RCS: @(#) $Id: regexp.n,v 1.29 2008/06/29 22:28:24 dkf Exp $
+'\" RCS: @(#) $Id: regexp.n,v 1.30 2008/07/07 08:29:14 dkf Exp $
 '\" 
 .so man.macros
 .TH regexp n 8.3 Tcl "Tcl Built-In Commands"
@@ -161,30 +162,37 @@ Find the first occurrence of a word starting with \fBfoo\fR in a
 string that is not actually an instance of \fBfoobar\fR, and get the
 letters following it up to the end of the word into a variable:
 .CS
-\fBregexp\fR {\e<foo(?!bar\e>)(\ew*)} $string \-> restOfWord
+\fBregexp\fR {\emfoo(?!bar\eM)(\ew*)} $string \-> restOfWord
 .CE
 Note that the whole matched substring has been placed in the variable
-\fB\->\fR which is a name chosen to look nice given that we are not
+.QW \fB\->\fR ,
+which is a name chosen to look nice given that we are not
 actually interested in its contents.
 .PP
 Find the index of the word \fBbadger\fR (in any case) within a string
 and store that in the variable \fBlocation\fR:
 .CS
-\fBregexp\fR \-indices {(?i)\e<badger\e>} $string location
+\fBregexp\fR \-indices {(?i)\embadger\eM} $string location
+.CE
+This could also be written as a \fIbasic\fR regular expression (as opposed
+to using the default syntax of \fIadvanced\fR regular expressions) match by
+prefixing the expression with a suitable flag:
+.CS
+\fBregexp\fR \-indices {(?ib)\e<badger\e>} $string location
 .CE
 .PP
-Count the number of octal digits in a string:
+This counts the number of octal digits in a string:
 .CS
 \fBregexp\fR \-all {[0\-7]} $string
 .CE
 .PP
-List all words (consisting of all sequences of non-whitespace
-characters) in a string:
+This lists all words (consisting of all sequences of non-whitespace
+characters) in a string, and is useful as a more powerful version of the
+\fBsplit\fR command:
 .CS
 \fBregexp\fR \-all \-inline {\eS+} $string
 .CE
 .SH "SEE ALSO"
-re_syntax(n), regsub(n),
-string(n)
+re_syntax(n), regsub(n), string(n)
 .SH KEYWORDS
-match, regular expression, string
+match, parsing, pattern, regular expression, splitting, string
diff --git a/doc/regsub.n b/doc/regsub.n
index cc5994f..5686c1d 100644
--- a/doc/regsub.n
+++ b/doc/regsub.n
@@ -1,3 +1,4 @@
+'\" -*- nroff -*-
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
@@ -6,7 +7,7 @@
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
-'\" RCS: @(#) $Id: regsub.n,v 1.23 2008/06/29 22:28:24 dkf Exp $
+'\" RCS: @(#) $Id: regsub.n,v 1.24 2008/07/07 08:29:14 dkf Exp $
 '\" 
 .so man.macros
 .TH regsub n 8.3 Tcl "Tcl Built-In Commands"
@@ -149,20 +150,26 @@ of regular expressions.
 Replace (in the string in variable \fIstring\fR) every instance of
 \fBfoo\fR which is a word by itself with \fBbar\fR:
 .CS
-\fBregsub\fR -all {\e<foo\e>} $string bar string
+\fBregsub\fR -all {\emfoo\eM} $string bar string
+.CE
+or (using the
+.QW "basic regular expression"
+syntax):
+.CS
+\fBregsub\fR -all {(?b)\e<foo\e>} $string bar string
 .CE
 .PP
 Insert double-quotes around the first instance of the word
 \fBinteresting\fR, however it is capitalized.
 .CS
-\fBregsub\fR -nocase {\e<interesting\e>} $string {"&"} string
+\fBregsub\fR -nocase {\eyinteresting\ey} $string {"&"} string
 .CE
 .PP
 Convert all non-ASCII and Tcl-significant characters into \eu escape
 sequences by using \fBregsub\fR and \fBsubst\fR in combination:
 .CS
 # This RE is just a character class for everything "bad"
-set RE {[][{};#\e\e\e$\es\eu0100-\euffff]}
+set RE {[][{};#\e\e\e$\es\eu0080-\euffff]}
 
 # We will substitute with a fragment of Tcl script in brackets
 set substitution {[format \e\e\e\eu%04x [scan "\e\e&" %c]]}
@@ -172,7 +179,6 @@ set substitution {[format \e\e\e\eu%04x [scan "\e\e&" %c]]}
 set quoted [subst [\fBregsub\fR -all $RE $string $substitution]]
 .CE
 .SH "SEE ALSO"
-regexp(n), re_syntax(n), subst(n),
-string(n)
+regexp(n), re_syntax(n), subst(n), string(n)
 .SH KEYWORDS
-match, pattern, regular expression, substitute
+match, pattern, quoting, regular expression, substitute