git-prompt: fix reading files with windows line endings

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 This patch fixes the issue by changing the internal field separator variable IFS to $'\r\n' before using the read builtin command. Note that ANSI-C Quoting/POSIX Quoting ($'...') is supported by bash as well as zsh, which are the current targets of git-prompt, cf. contrib/completion/git-prompt.sh. Signed-off-by: Robert Abel <rabel@robertabel.eu> Signed-off-by: Junio C Hamano <gitster@pobox.com>