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| author | Juri Linkov <juri@jurta.org> | 2020-09-20 15:46:19 +0200 |
|---|---|---|
| committer | Lars Ingebrigtsen <larsi@gnus.org> | 2020-09-20 15:46:19 +0200 |
| commit | 09e109851b94d826424a073b56700a46bdbf4b5f (patch) | |
| tree | 5b07566c7525834e94e8b5c79f12a52ec110e7c6 /doc/emacs | |
| parent | f8d8d28bc67cc69efd9a5d9d9bf3aba43219e0e3 (diff) | |
| download | emacs-09e109851b94d826424a073b56700a46bdbf4b5f.tar.gz emacs-09e109851b94d826424a073b56700a46bdbf4b5f.tar.bz2 emacs-09e109851b94d826424a073b56700a46bdbf4b5f.zip | |
Highlight regexp sub-expressions
* doc/emacs/search.texi (Search Customizations): Document it.
* lisp/isearch.el (search-highlight-submatches): New variable.
(isearch-group-1, isearch-group-2, isearch-group-3)
(isearch-group-4, isearch-group-5): New faces.
(isearch-highlight): Use them.
(isearch-dehighlight): Ditto (bug#6227).
Diffstat (limited to 'doc/emacs')
| -rw-r--r-- | doc/emacs/search.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/emacs/search.texi b/doc/emacs/search.texi index 2e094f3ad92..9716d87504e 100644 --- a/doc/emacs/search.texi +++ b/doc/emacs/search.texi @@ -1977,6 +1977,16 @@ performs case folding and lax-whitespace matching. using the @code{isearch} face. This highlighting can be disabled by setting the variable @code{search-highlight} to @code{nil}. +@vindex search-highlight-submatches + When searching for regular expressions (with @kbd{C-u C-s}, for +instance), subexpressions receive special highlighting depending on +the @code{search-highlight-submatches} variable. If this variable is +zero, no special highlighting is done, but if this is larger than +zero, subexpressions will be matched with +@code{isearch-group-}@samp{X} faces. For instance, when searching for +@samp{foo-\([0-9]+\)}, the part matched by @samp{[0-9]+} will be +highlighted with the @code{isearch-group-1} face. + @cindex lazy highlighting customizations @vindex isearch-lazy-highlight @cindex @code{lazy-highlight} face |