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Diffstat (limited to 'doc/sed.texi')
| -rw-r--r-- | doc/sed.texi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/sed.texi b/doc/sed.texi index 528573f..f04da80 100644 --- a/doc/sed.texi +++ b/doc/sed.texi @@ -2991,10 +2991,12 @@ the @env{LC_COLLATE} and @env{LC_CTYPE} environment variables to @samp{C}. The only difference between basic and extended regular expressions is in the behavior of a few characters: @samp{?}, @samp{+}, parentheses, -and braces (@samp{@{@}}). While basic regular expressions require -these to be escaped if you want them to behave as special characters, -when using extended regular expressions you must escape them if -you want them @emph{to match a literal character}. +braces (@samp{@{@}}), and @samp{|}. While basic regular expressions +require these to be escaped if you want them to behave as special +characters, when using extended regular expressions you must escape +them if you want them @emph{to match a literal character}. @samp{|} +is special here because @samp{\|} is a GNU extension -- standard +basic regular expressions do not provide its functionality. @noindent Examples: |