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Diffstat (limited to 'doc/gawktexi.in')
| -rw-r--r-- | doc/gawktexi.in | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/gawktexi.in b/doc/gawktexi.in index e1c157b4..d485a50d 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -5302,6 +5302,17 @@ With the POSIX character classes, you can write @code{/[[:alnum:]]/} to match the alphabetic and numeric characters in your character set. +@c Thanks to +@c Date: Tue, 01 Jul 2014 07:39:51 +0200 +@c From: Hermann Peifer <peifer@gmx.eu> +Some utilities that match regular expressions provide a non-standard +@code{[:ascii:]} character class; @command{awk} does not. However, you +can simulate such a construct using @code{[\x00-\x7F]}. This matches +all values numerically between zero and 127, which is the defined +range of the ASCII character set. Use a complemented character list +(@code{[^\x00-\x7F]}) to match any single-byte characters that are not +in the ASCII range. + @cindex bracket expressions, collating elements @cindex bracket expressions, non-ASCII @cindex collating elements |