Re: [PATCH v2] config: add --comment option to add a comment

[Junio C Hamano <gitster@pobox.com>]

Ralph Seichter <github@seichter.de> writes:

> * Chris Torek:
>
>> You must use a literal line feed, e.g.:
>>
>> LF='
>> '
>
> Of course, silly me. Easily done in a shell script. I was too focused on
> trying it in an interactive shell. Thanks, Chris.

;-) 

I think I've already given you that in my first message that
mentioned multi-line input.  In the test suite, we already have that
$LF defined so your tests can use it without defining it yourself.

> Do you perhaps know of a function in the Git code base which could be
> used to sanitise strings? It is quite a lot of code to sift through if
> one is unfamiliar with it, so I'll gladly take hints.

Don't silently butcher end-user input; instead do something like
this to make it clear that you do not support it.

	if (strchr(comment_message, '\n'))
		die(_("multi-line comment not supported: '%s'"),
			comment_message);