diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/text.n | 27 |
1 files changed, 24 insertions, 3 deletions
@@ -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. '\" -'\" RCS: @(#) $Id: text.n,v 1.15 2003/02/19 18:52:14 mdejong Exp $ +'\" RCS: @(#) $Id: text.n,v 1.16 2003/05/19 13:04:22 vincentdarley Exp $ '\" .so man.macros .TH text n 8.4 Tk "Tk Built-In Commands" @@ -1166,7 +1166,9 @@ This is the default. \fB\-backwards\fR The search will proceed backward through the text, finding the matching range closest to \fIindex\fR whose first character -is before \fIindex\fR. +is before \fIindex\fR. Note that, for a variety of reasons, backwards +searches can be substantially slower than forwards searches, so it is +recommended that performance-critical code use forward searches. .TP \fB\-exact\fR Use exact matching: the characters in the matching range must be @@ -1176,7 +1178,18 @@ This is the default. \fB\-regexp\fR Treat \fIpattern\fR as a regular expression and match it against the text using the rules for regular expressions (see the \fBregexp\fR -command for details). +command for details). The default matching automatically passes +both the \fB\-lineanchor\fR and \fB\-linestop\fR options +to the regexp engine (unless \fB\-nolinestop\fR is used), so that +\fI^$\fR match beginning and end of line, and \fI.\fR, \fI[^\fR +sequences will never match the newline character \fI\n\fR. +.TP +\fB\-nolinestop\fR +This allows +\fI.\fR and \fI[^\fR sequences to match the newline character \fI\n\fR, +which they will otherwise not do (see the \fBregexp\fR +command for details). This option is only meaningful if \fB\-regexp\fR +is also given, and an error will be thrown otherwise. .TP \fB\-nocase\fR Ignore case differences between the pattern and the text. @@ -1189,6 +1202,14 @@ embedded images or windows in the matching range, this is equivalent to the number of characters matched. In either case, the range \fImatchIdx\fR to \fImatchIdx + $count chars\fR will return the entire matched text. .TP +\fB\-all\fR +Find all matches in the given range and return a list of the indices of +the first character of each match. If a \fB\-count\fI varName\fR switch is +given, then \fBvarName\fR is also set to a list containing one element +for each successful match. Note that, even for exact searches, the +elements of this list may be different, if there are embedded images, +windows or hidden text. +.TP \fB\-elide\fR Find elidden (hidden) text as well. By default only displayed text is searched. |