Re: [PATCH] Avoid false positives in label detection in cpp diff hunk header regex.

> Vadim Zeitlin <vz-git@zeitlins.org> writes:
> 
>> A C++ method start such as
>>
>>         void
>>         foo::bar()
>>
>> wasn't recognized by cpp diff driver as it mistakenly included "foo::bar" as a
>> label. However the colon in a label can't be followed by another colon, so
>> recognize this case specially to correctly detect C++ methods using this style.

>>  PATTERNS("cpp",
>>          /* Jump targets or access declarations */
>> -        "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n"
>> +        "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:([^:].*$|$)\n"
> 
> Hmm.  Wouldn't "find a word (possibly after indentation), colon and
> then either a non-colon or end of line" be sufficient and simpler?
> iow, something like...
> 
>        "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:([^:]|$)"