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From: Junio C Hamano <gitster@pobox.com>
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Date: Wed, 18 Mar 2015 14:33:01 -0700
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To: Jeff King <peff@peff.net>
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On Wed, Mar 18, 2015 at 2:28 PM, Jeff King <peff@peff.net> wrote:
> On Wed, Mar 18, 2015 at 05:17:16PM -0400, Jeff King wrote:
>
>> [1] The double-CR fix works because we strip a single CR from the end of
>>     the line (as a convenience for CRLF systems), and then the remaining
>>     CR is syntactically significant. But I am surprised that quoting
>>     like:
>>
>>       printf '"Icon\r"' >.gitignore
>>
>>     does not seem to work.
>
> Answering myself: we don't do quoting like this in .gitignore. We allow
> backslashing to escape particular characters, like trailing whitespace.
> So in theory:
>
>   Icon\\r
>
> (where "\r" is a literal CR) would work. But it doesn't, because the
> CRLF chomping happens separately, and CR is therefore a special case. I
> suspect you could not .gitignore a file with a literal LF in it at all
> (and I equally suspect that nobody cares in practice).

What does the Icon^M try to catch, exactly? Is it a file? Is it a directory?
Is it "anything that begins with Icon^M"?

I am wondering if we need an opposite of '/' prefix in the .gitignore file
to say "the pattern does not match a directory, only a file".