[pmwiki-users] Regex help (excluding spaces)

Brian Tibbels brian.tibbels at clickmarlow.co.uk
Sat Mar 9 17:57:53 CST 2013


LOL @ petko :)
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*



On 9 March 2013 21:40, Petko Yotov <5ko at 5ko.fr> wrote:

> Eric Forgeot writes:
>
>>   Markup ('txt2tags_bold', 'directives', '/\*\*(.*?)\*\*/', "'''$1'''");
>>
>> It works but I get wrong output when having for example **this and
>> **this, because this kind of text is not supposed to be marked as bold.
>>  (**this and** should be bold on the other hand)
>>
>> So I modified my rule this way, to exclude white spaces before or after:
>>
>>     Markup ('txt2tags_bold'     , 'directives',
>> '/\*\*[^\s](.*?)[^\s]\*\*/'       , "'''$1'''");
>>
>> Now it almost works, **this and **this are not catched, but the bold
>> parts are not correct, the first and last letters are striped out, for
>> example **another** would become nothe (in bold). Do you know why, and how
>> to correct this?
>>
>
> You need to place the parentheses around everything that is meant to be
> bold, for example '/\*\*([^\s].*?[^\s])\*\*/' .
>
> However, this will not allow you a single bold character. This one will:
>
>   '/\\*\\*(\\S(.*?\\S)?)\\*\\*/'
>
> This means :
>  - starts with a '**'
>  - opening the first matched pattern (
>  - then a non-whitespace-character \\S, same as [^\\s]
>  - opening a second pattern (
>    - .* anything, ending with a non-whitespace-character \\S
>    - closing the second pattern )
>    - the ? after the ) means the pattern is optional
>  - closing the first matching pattern )
>  - once again '**'.
>
> This is fun :-)
>
> Petko
>
>
>
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