Re: [PATCH] git-prompt: fix reading files with windows line endings

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi Robert,

On Tue, 28 Nov 2017, Robert Abel wrote:

> If any of the files read by __git_eread have \r\n line endings, read
> will only strip \n, leaving \r. This results in an ugly prompt, where
> instead of
> 
>     user@pc MINGW64 /path/to/repo (BARE:master)
> 
> the last parenthesis is printed over the beginning of the prompt like
> 
>     )ser@pc MINGW64 /path/to/repo (BARE:master

Thats' unfortunate, and obviously something to fix.

> diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
> index c6cbef38c2..71a64e7959 100644
> --- a/contrib/completion/git-prompt.sh
> +++ b/contrib/completion/git-prompt.sh
> @@ -282,7 +282,7 @@ __git_eread ()
>  {
>  	local f="$1"
>  	shift
> -	test -r "$f" && read "$@" <"$f"
> +	test -r "$f" && read "$@" <"$f" && export $@="${!@%$'\r'}"

As far as I understand, $'\r' is a Bash-only construct, and this file
(git-prompt.sh) is targeting other Unix shells, too.

So how about using `tr -d '\r' <"$f" | read "$@"` instead?

Or maybe keep with the Bash construct, but guarded behind a test that we
area actually running in Bash? Something like

	test -z "$BASH" || IFS=$' \t\r\n'

Ciao,
Johannes