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revision 1.22 by pertusus, Tue Aug 9 17:19:26 2005 UTC revision 1.23 by pertusus, Tue Aug 23 23:51:16 2005 UTC
# Line 168  characters with <kbd>DEL</kbd>. Line 168  characters with <kbd>DEL</kbd>.
168  </p>  </p>
169  <p>  After you exit a search, you can search for the same string again by  <p>  After you exit a search, you can search for the same string again by
170  typing just <kbd>C-s C-s</kbd>: the first <kbd>C-s</kbd> is the key that invokes  typing just <kbd>C-s C-s</kbd>: the first <kbd>C-s</kbd> is the key that invokes
171  incremental search, and the second <kbd>C-s</kbd> means &quot;search again&quot;.  incremental search, and the second <kbd>C-s</kbd> means &ldquo;search again&rdquo;.
172  </p>  </p>
173  <p>  If the specified string is not found at all, the echo area displays  <p>  If the specified string is not found at all, the echo area displays
174  the text <samp>`Failing I-Search'</samp>.  The cursor is after the place where  the text <samp>`Failing I-Search'</samp>.  The cursor is after the place where
# Line 177  Emacs found as much of your string as it Line 177  Emacs found as much of your string as it
177  <samp>`FOO'</samp> in <samp>`FOOL'</samp>.  At this point there are several things you  <samp>`FOO'</samp> in <samp>`FOOL'</samp>.  At this point there are several things you
178  can do.  If you mistyped the search string, correct it.  If you like the  can do.  If you mistyped the search string, correct it.  If you like the
179  place you have found, you can type <kbd>RET</kbd> or some other Emacs command  place you have found, you can type <kbd>RET</kbd> or some other Emacs command
180  to &quot;accept what the search offered&quot;.  Or you can type <kbd>C-g</kbd>, which  to &ldquo;accept what the search offered&rdquo;.  Or you can type <kbd>C-g</kbd>, which
181  removes from the search string the characters that could not be found  removes from the search string the characters that could not be found
182  (the <samp>`T'</samp> in <samp>`FOOT'</samp>), leaving those that were found (the  (the <samp>`T'</samp> in <samp>`FOOT'</samp>), leaving those that were found (the
183  <samp>`FOO'</samp> in <samp>`FOOT'</samp>).  A second <kbd>C-g</kbd> at that point cancels  <samp>`FOO'</samp> in <samp>`FOOT'</samp>).  A second <kbd>C-g</kbd> at that point cancels
# Line 191  is called <em>wrapping around</em>.  <sa Line 191  is called <em>wrapping around</em>.  <sa
191  prompt once this has happened.  prompt once this has happened.
192  </p>  </p>
193  <a name="IDX411"></a>  <a name="IDX411"></a>
194  <p>  The <kbd>C-g</kbd> &quot;quit&quot; character does special things during searches;  <p>  The <kbd>C-g</kbd> &ldquo;quit&rdquo; character does special things during searches;
195  just what it does depends on the status of the search.  If the search has  just what it does depends on the status of the search.  If the search has
196  found what you specified and is waiting for input, <kbd>C-g</kbd> cancels the  found what you specified and is waiting for input, <kbd>C-g</kbd> cancels the
197  entire search.  The cursor moves back to where you started the search.  If  entire search.  The cursor moves back to where you started the search.  If
198  <kbd>C-g</kbd> is typed when there are characters in the search string that have  <kbd>C-g</kbd> is typed when there are characters in the search string that have
199  not been found--because Emacs is still searching for them, or because it  not been found&mdash;because Emacs is still searching for them, or because it
200  has failed to find them--then the search string characters which have not  has failed to find them&mdash;then the search string characters which have not
201  been found are discarded from the search string.  The  been found are discarded from the search string.  The
202  search is now successful and waiting for more input, so a second <kbd>C-g</kbd>  search is now successful and waiting for more input, so a second <kbd>C-g</kbd>
203  cancels the entire search.  cancels the entire search.
# Line 240  would need to type more to select one. Line 240  would need to type more to select one.
240  <p>  You can change any of the special characters in incremental search via  <p>  You can change any of the special characters in incremental search via
241  the normal keybinding mechanism: simply add a binding to the  the normal keybinding mechanism: simply add a binding to the
242  <code>isearch-mode-map</code>.  For example, to make the character  <code>isearch-mode-map</code>.  For example, to make the character
243  <kbd>C-b</kbd> mean &quot;search backwards&quot; while in isearch-mode, do this:  <kbd>C-b</kbd> mean &ldquo;search backwards&rdquo; while in isearch-mode, do this:
244  </p>  </p>
245  <table><tr><td>&nbsp;</td><td><pre class="example">(define-key isearch-mode-map &quot;\C-b&quot; 'isearch-repeat-backward)  <table><tr><td>&nbsp;</td><td><pre class="example">(define-key isearch-mode-map &quot;\C-b&quot; 'isearch-repeat-backward)
246  </pre></td></tr></table>  </pre></td></tr></table>
# Line 508  also make good use of regular expression Line 508  also make good use of regular expression
508  <p> The XEmacs regular expression syntax most closely resembles that of  <p> The XEmacs regular expression syntax most closely resembles that of
509  <cite>ed</cite>, or <cite>grep</cite>, the GNU versions of which all utilize the GNU  <cite>ed</cite>, or <cite>grep</cite>, the GNU versions of which all utilize the GNU
510  <cite>regex</cite> library.  XEmacs' version of <cite>regex</cite> has recently been  <cite>regex</cite> library.  XEmacs' version of <cite>regex</cite> has recently been
511  extended with some Perl-like capabilities, described in the next  extended with some Perl&ndash;like capabilities, described in the next
512  section.  section.
513  </p>  </p>
514  <p> In XEmacs, you can search for the next match for a regexp either  <p> In XEmacs, you can search for the next match for a regexp either
# Line 854  the same exact text. Line 854  the same exact text.
854  substring to be recorded for future reference.  substring to be recorded for future reference.
855  </p>  </p>
856  <p>This is useful when you need a lot of grouping <samp>`\( &hellip; \)'</samp>  <p>This is useful when you need a lot of grouping <samp>`\( &hellip; \)'</samp>
857  constructs, but only want to remember one or two - or if you have  constructs, but only want to remember one or two &ndash; or if you have
858  more than nine groupings and need to use backreferences to refer to  more than nine groupings and need to use backreferences to refer to
859  the groupings at the end.  the groupings at the end.
860  </p>  </p>
# Line 895  stand for them. Line 895  stand for them.
895  </p></dd>  </p></dd>
896  </dl>  </dl>
897    
898  <p>  The following regular expression constructs match the empty string--that is,  <p>  The following regular expression constructs match the empty string&mdash;that is,
899  they don't use up any characters--but whether they match depends on the  they don't use up any characters&mdash;but whether they match depends on the
900  context.  context.
901  </p>  </p>
902  <dl compact="compact">  <dl compact="compact">

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