From e1622bfcbad680225ad5c337e4778df88389227e Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Mon, 23 Nov 2009 15:56:32 -0800 Subject: [PATCH] Protect scripted Porcelains from GREP_OPTIONS insanity If the user has exported the GREP_OPTIONS environment variable, the output from "grep" and "egrep" in scripted Porcelains may be different from what they expect. For example, we may want to count number of matching lines, by "grep" piped to "wc -l", and GREP_OPTIONS=-C3 will break such use. The approach taken by this change to address this issue is to protect only our own use of grep/egrep. Because we do not unset it at the beginning of our scripts, hook scripts run from the scripted Porcelains are exposed to the same insanity this environment variable causes when grep/egrep is used to implement logic (e.g. "grep | wc -l"), and it is entirely up to the hook scripts to protect themselves. On the other hand, applypatch-msg hook may want to show offending words in the proposed commit log message using grep to the end user, and the user might want to set GREP_OPTIONS=--color to paint the match more visibly. The approach to protect only our own use without unsetting the environment variable globally will allow this use case. Signed-off-by: Junio C Hamano --- git-am.sh | 4 ++-- git-bisect.sh | 4 ++-- git-filter-branch.sh | 2 +- git-instaweb.sh | 8 ++++---- git-rebase--interactive.sh | 10 +++++----- git-rebase.sh | 2 +- git-sh-setup.sh | 8 ++++++++ git-submodule.sh | 6 +++--- 8 files changed, 26 insertions(+), 18 deletions(-) diff --git a/git-am.sh b/git-am.sh index c132f50da5..b49f26a49c 100755 --- a/git-am.sh +++ b/git-am.sh @@ -205,7 +205,7 @@ check_patch_format () { # and see if it looks like that they all begin with the # header field names... sed -n -e '/^$/q' -e '/^[ ]/d' -e p "$1" | - LC_ALL=C egrep -v '^[!-9;-~]+:' >/dev/null || + sane_egrep -v '^[!-9;-~]+:' >/dev/null || patch_format=mbox fi } < "$1" || clean_abort @@ -554,7 +554,7 @@ do stop_here $this # skip pine's internal folder data - grep '^Author: Mail System Internal Data$' \ + sane_grep '^Author: Mail System Internal Data$' \ <"$dotest"/info >/dev/null && go_next && continue diff --git a/git-bisect.sh b/git-bisect.sh index 6f6f03966f..0c422d5fb5 100755 --- a/git-bisect.sh +++ b/git-bisect.sh @@ -393,7 +393,7 @@ bisect_run () { cat "$GIT_DIR/BISECT_RUN" - if grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \ + if sane_grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \ > /dev/null; then echo >&2 "bisect run cannot continue any more" exit $res @@ -405,7 +405,7 @@ bisect_run () { exit $res fi - if grep "is the first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then + if sane_grep "is the first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then echo "bisect run success" exit 0; fi diff --git a/git-filter-branch.sh b/git-filter-branch.sh index a480d6fc70..8ef1bde710 100755 --- a/git-filter-branch.sh +++ b/git-filter-branch.sh @@ -457,7 +457,7 @@ if [ "$filter_tag_name" ]; then git mktag) || die "Could not create new tag object for $ref" if git cat-file tag "$ref" | \ - grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1 + sane_grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1 then warn "gpg signature stripped from tag object $sha1t" fi diff --git a/git-instaweb.sh b/git-instaweb.sh index d96eddbe56..84805c61e5 100755 --- a/git-instaweb.sh +++ b/git-instaweb.sh @@ -41,7 +41,7 @@ resolve_full_httpd () { case "$httpd" in *apache2*|*lighttpd*) # ensure that the apache2/lighttpd command ends with "-f" - if ! echo "$httpd" | grep -- '-f *$' >/dev/null 2>&1 + if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1 then httpd="$httpd -f" fi @@ -297,8 +297,8 @@ EOF # check to see if Dennis Stosberg's mod_perl compatibility patch # (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied - if test -f "$module_path/mod_perl.so" && grep 'MOD_PERL' \ - "$GIT_DIR/gitweb/gitweb.cgi" >/dev/null + if test -f "$module_path/mod_perl.so" && + sane_grep 'MOD_PERL' "$GIT_DIR/gitweb/gitweb.cgi" >/dev/null then # favor mod_perl if available cat >> "$conf" </dev/null 2>&1 || \ + $list_mods | sane_grep 'mod_cgi\.c' >/dev/null 2>&1 || \ echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf" cat >> "$conf" <> "$DONE" sed -e 1d < "$TODO" >> "$TODO".new mv -f "$TODO".new "$TODO" - count=$(grep -c '^[^#]' < "$DONE") - total=$(($count+$(grep -c '^[^#]' < "$TODO"))) + count=$(sane_grep -c '^[^#]' < "$DONE") + total=$(($count+$(sane_grep -c '^[^#]' < "$TODO"))) if test "$last_count" != "$count" then last_count=$count @@ -147,7 +147,7 @@ die_abort () { } has_action () { - grep '^[^#]' "$1" >/dev/null + sane_grep '^[^#]' "$1" >/dev/null } pick_one () { @@ -731,7 +731,7 @@ first and then run 'git rebase --continue' again." git rev-list $REVISIONS | while read rev do - if test -f "$REWRITTEN"/$rev -a "$(grep "$rev" "$DOTEST"/not-cherry-picks)" = "" + if test -f "$REWRITTEN"/$rev -a "$(sane_grep "$rev" "$DOTEST"/not-cherry-picks)" = "" then # Use -f2 because if rev-list is telling us this commit is # not worthwhile, we don't want to track its multiple heads, @@ -739,7 +739,7 @@ first and then run 'git rebase --continue' again." # be rebasing on top of it git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$DROPPED"/$rev short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev) - grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO" + sane_grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO" rm "$REWRITTEN"/$rev fi done diff --git a/git-rebase.sh b/git-rebase.sh index 6ec155cf03..0ec435558f 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -467,7 +467,7 @@ orig_head=$branch mb=$(git merge-base "$onto" "$branch") if test "$upstream" = "$onto" && test "$mb" = "$onto" && # linear history? - ! (git rev-list --parents "$onto".."$branch" | grep " .* ") > /dev/null + ! (git rev-list --parents "$onto".."$branch" | sane_grep " .* ") > /dev/null then if test -z "$force_rebase" then diff --git a/git-sh-setup.sh b/git-sh-setup.sh index c41c2f7439..aa07cc3d18 100755 --- a/git-sh-setup.sh +++ b/git-sh-setup.sh @@ -114,6 +114,14 @@ git_editor() { eval "${GIT_EDITOR:=vi}" '"$@"' } +sane_grep () { + GREP_OPTIONS= LC_ALL=C grep "$@" +} + +sane_egrep () { + GREP_OPTIONS= LC_ALL=C egrep "$@" +} + is_bare_repository () { git rev-parse --is-bare-repository } diff --git a/git-submodule.sh b/git-submodule.sh index 0462e529d9..b7ccd12d72 100755 --- a/git-submodule.sh +++ b/git-submodule.sh @@ -57,7 +57,7 @@ resolve_relative_url () # module_list() { - git ls-files --error-unmatch --stage -- "$@" | grep '^160000 ' + git ls-files --error-unmatch --stage -- "$@" | sane_grep '^160000 ' } # @@ -567,7 +567,7 @@ cmd_summary() { cd_to_toplevel # Get modified modules cared by user modules=$(git $diff_cmd $cached --raw $head -- "$@" | - egrep '^:([0-7]* )?160000' | + sane_egrep '^:([0-7]* )?160000' | while read mod_src mod_dst sha1_src sha1_dst status name do # Always show modules deleted or type-changed (blob<->module) @@ -581,7 +581,7 @@ cmd_summary() { test -z "$modules" && return git $diff_cmd $cached --raw $head -- $modules | - egrep '^:([0-7]* )?160000' | + sane_egrep '^:([0-7]* )?160000' | cut -c2- | while read mod_src mod_dst sha1_src sha1_dst status name do