In the Etags manual, when comparing the regular expression syntax to

that of Emacs, remove the references to the interval operator, which is
now part of Emacs as well as Etags, and add references to greedy
operators and shy groups, which are now part of Emacs, but not of Etags.

diff --git a/man/maintaining.texi b/man/maintaining.texi
index e32c3294251edae3e9cbe4c09af78367370fb97b..59c2d7cf9db9c1de455022585edc0282cab20d0c 100644 (file)
--- a/man/maintaining.texi
+++ b/man/maintaining.texi
@@ -474,12 +474,9 @@ expressions, @samp{\} quotes the next character, and @samp{\t} stands
 for the tab character.  Note that @code{etags} does not handle the other
 C escape sequences for special characters.
 
-@cindex interval operator (in regexps)
   The syntax of regular expressions in @code{etags} is the same as in
-Emacs, augmented with the @dfn{interval operator}, which works as in
-@code{grep} and @code{ed}.  The syntax of an interval operator is
-@samp{\@{@var{m},@var{n}\@}}, and its meaning is to match the preceding
-expression at least @var{m} times and up to @var{n} times.
+Emacs.  However, non-greedy operators and shy groups are not
+available.
 
   You should not match more characters with @var{tagregexp} than that
 needed to recognize what you want to tag.  If the match is such that