From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 03 Dec 2007 21:28:07 GMT
Subject: Re: [PATCH] Open external merge tool with original file extensions in all three files
Message-ID: <7vlk8bh3iw.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <7v63zfiqx8.fsf@gitster.siamese.dyndns.org>

Junio C Hamano <gitster@pobox.com> writes:

> Pini Reznik <pinir@expand.com> writes:
>
>> This required to be able to use syntax highlighting in meld during
>> conflicts resolution....
>
>> +    extension=`echo $path | awk -F \. '{print $NF}'`
>> +    BACKUP="$path.BACKUP.$$.${extension}"
>> +    LOCAL="$path.LOCAL.$$.${extension}"
>> +    REMOTE="$path.REMOTE.$$.${extension}"
>> +    BASE="$path.BASE.$$.${extension}"
>
> I had to wonder what would happen in these cases:
>
>  * path = "a/b/c/d"
>  * path = "a/b.c/d"
>
> I also think spawning awk for this is way overkill.

IOW, I would probably write the above like this:

	ext="$$$(expr "$path" : '.*\(\.[^/]*\)$')"
        BACKUP="$path.BACKUP.$ext"
        LOCAL="$path.LOCAL.$ext"
        REMOTE="$path.REMOTE.$ext"
        BASE="$path.BASE.$ext"