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Escape regexp metacharacters
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Ian Zimmerman
Sep 20, 2015, 12:34:01 PM9/20/15
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Is there a filter type program that copies its stdin to its stdout, but
with all regexp metacharacters escaped? I do mean regexp, not glob.
I can certainly write a sed script to the same effect. It just seems a
generic enough task that someone must have already done it. :-P
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with all regexp metacharacters escaped? I do mean regexp, not glob.
I can certainly write a sed script to the same effect. It just seems a
generic enough task that someone must have already done it. :-P
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Please *no* private copies of mailing list or newsgroup messages.
Rule 420: All persons more than eight miles high to leave the court.
Thomas 'PointedEars' Lahn
Sep 20, 2015, 12:59:49 PM9/20/15
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Ian Zimmerman wrote:
> Is there a filter type program [except sed & friends] that copies its
metacharacters”.
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PointedEars
Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.
> Is there a filter type program [except sed & friends] that copies its
> stdin to its stdout, but with all regexp metacharacters escaped?
Doubtful, because there is no universal definition of “regexp
metacharacters”.
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PointedEars
Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.
Ed Morton
Sep 20, 2015, 1:27:20 PM9/20/15
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On 9/20/2015 11:21 AM, Ian Zimmerman wrote:
> Is there a filter type program that copies its stdin to its stdout, but
> with all regexp metacharacters escaped? I do mean regexp, not glob.
>
> I can certainly write a sed script to the same effect. It just seems a
> generic enough task that someone must have already done it. :-P
>
No because there's BREs and EREs and PCREs and POSIX/non-POSIX and escaping RE
> Is there a filter type program that copies its stdin to its stdout, but
> with all regexp metacharacters escaped? I do mean regexp, not glob.
>
> I can certainly write a sed script to the same effect. It just seems a
> generic enough task that someone must have already done it. :-P
>
metachars doesn't meant the tool will work (e.g. sed '/re/' needs the /s escaped
inside re as well as the re metachars), etc.
If you want something that';ll work for sed, see
Ed Morton
Sep 20, 2015, 1:27:55 PM9/20/15
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