Re: Substitution question

[DervishD <raul@xxxxxxxxxxxx>]

    Hi Björn :)

 * Björn Lindström <bkhl@xxxxxxxxxxxxxxx> dixit:
> Can somebody tell me what type of patterns are supported in l, in the
> $x:s/l/r syntax?

    Read the info manual, section 'History Expansion', node
'Modifiers'. Scroll down a bit and you'll find the answer. The 'l'
part is not a regex :(
 
> I'd like to do something like:
> 
> $x:gs/[^A-Za-z0-9]/_
> 
> to replace all characters except for the ones listed with underscore.

    ¿How about using ${x//PATTERN/REPLACEMENT}? Then you can use the
patterns valid for filename generation (sort of a regex, more or less
powerful depending on the option 'EXTENDED_GLOB'. For your example, I
would do:

    print ${x//[^[:alnum:]]/_}

    Whether to use 'print' or not is up to your particular use. The
double '//' is to say 'make substitutions global, not only the
first', and the 'regex' is to say 'al non alphanumeric characters'.
Hope this helps.

    Raúl Núñez de Arenas Coronado

-- 
Linux Registered User 88736
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