Re: [PATCH] prompt: fix missing file errors in zsh
From: Junio C Hamano <hidden>
Date: 2016-06-15 23:00:42
Felipe Contreras [off-list ref] writes:
zsh seems to have a bug while redirecting the stderr of the 'read' command: % read foo 2> /dev/null < foo zsh: no such file or directory: foo Which causes errors to be displayed when certain files are missing. Let's add a convenience function to manually check if the file is readable before calling "read".
OK. I wondered if this can become conditional to zsh (with the common code still using eread, just the implementation of shell function being different from zsh and bash), but I doubt it would be worth it (other people can contradict me, of course). Will queue. Thanks.
quoted hunk
Signed-off-by: Felipe Contreras <redacted> --- contrib/completion/git-prompt.sh | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-)diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh index 7b732d2..1526086 100644 --- a/contrib/completion/git-prompt.sh +++ b/contrib/completion/git-prompt.sh@@ -259,6 +259,13 @@ __git_ps1_colorize_gitstring () r="$c_clear$r" } +eread () +{ + f="$1" + shift + test -r "$f" && read "$@" < "$f" +} + # __git_ps1 accepts 0 or 1 arguments (i.e., format string) # when called from PS1 using command substitution # in this mode it prints text to add to bash PS1 prompt (includes branch name)@@ -321,9 +328,9 @@ __git_ps1 () local step="" local total="" if [ -d "$g/rebase-merge" ]; then - read b 2>/dev/null <"$g/rebase-merge/head-name" - read step 2>/dev/null <"$g/rebase-merge/msgnum" - read total 2>/dev/null <"$g/rebase-merge/end" + eread "$g/rebase-merge/head-name" b + eread "$g/rebase-merge/msgnum" step + eread "$g/rebase-merge/end" total if [ -f "$g/rebase-merge/interactive" ]; then r="|REBASE-i" else@@ -331,10 +338,10 @@ __git_ps1 () fi else if [ -d "$g/rebase-apply" ]; then - read step 2>/dev/null <"$g/rebase-apply/next" - read total 2>/dev/null <"$g/rebase-apply/last" + eread "$g/rebase-apply/next" step + eread "$g/rebase-apply/last" total if [ -f "$g/rebase-apply/rebasing" ]; then - read b 2>/dev/null <"$g/rebase-apply/head-name" + eread "$g/rebase-apply/head-name" b r="|REBASE" elif [ -f "$g/rebase-apply/applying" ]; then r="|AM"@@ -358,7 +365,7 @@ __git_ps1 () b="$(git symbolic-ref HEAD 2>/dev/null)" else local head="" - if ! read head 2>/dev/null <"$g/HEAD"; then + if ! eread "$g/HEAD" head; then if [ $pcmode = yes ]; then PS1="$ps1pc_start$ps1pc_end" fi