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Ævar Arnfjörð Bjarmason 07a3d41173 grep: remove regflags from the public grep_opt API 
Refactor calls to the grep machinery to always pass opt.ignore_case &
opt.extended_regexp_option instead of setting the equivalent regflags
bits.

The bug fixed when making -i work with -P in commit 9e3cbc59d5 ("log:
make --regexp-ignore-case work with --perl-regexp", 2017-05-20) was
really just plastering over the code smell which this change fixes.

The reason for adding the extensive commentary here is that I
discovered some subtle complexity in implementing this that really
should be called out explicitly to future readers.

Before this change we'd rely on the difference between
`extended_regexp_option` and `regflags` to serve as a membrane between
our preliminary parsing of grep.extendedRegexp and grep.patternType,
and what we decided to do internally.

Now that those two are the same thing, it's necessary to unset
`extended_regexp_option` just before we commit in cases where both of
those config variables are set. See 84befcd0a4 ("grep: add a
grep.patternType configuration setting", 2012-08-03) for the code and
documentation related to that.

The explanation of why the if/else branches in
grep_commit_pattern_type() are ordered the way they are exists in that
commit message, but I think it's worth calling this subtlety out
explicitly with a comment for future readers.

Even though grep_commit_pattern_type() is the only caller of
grep_set_pattern_type_option() it's simpler to reset the
extended_regexp_option flag in the latter, since 2/3 branches in the
former would otherwise need to reset it, this way we can do it in one
place.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-30 10:06:24 -07:00
..
add.c Merge branch 'jk/warn-add-gitlink' 2017-06-24 14:28:41 -07:00
am.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
annotate.c
apply.c Convert read_mmblob to take struct object_id. 2016-09-07 12:59:42 -07:00
archive.c archive: read local configuration 2016-11-22 13:55:20 -08:00
bisect--helper.c
blame.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
branch.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
bundle.c bundle: use prefix_filename with bundle path 2017-03-21 11:18:41 -07:00
cat-file.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
check-attr.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
check-ignore.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
check-mailmap.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
check-ref-format.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
checkout-index.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
checkout.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
clean.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
clone.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
column.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
commit-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
commit.c Merge branch 'lb/status-stash-count' 2017-06-26 14:09:29 -07:00
config.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
count-objects.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
credential.c credential: handle invalid arguments earlier 2017-05-30 14:45:03 +09:00
describe.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff-files.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff-index.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
difftool.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
fast-export.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
fetch-pack.c Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
fetch.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
fmt-merge-msg.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
for-each-ref.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
fsck.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
gc.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
get-tar-commit-id.c usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
grep.c grep: remove regflags from the public grep_opt API 2017-06-30 10:06:24 -07:00
hash-object.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
help.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
index-pack.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
init-db.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
interpret-trailers.c Merge branch 'jk/parseopt-string-list' into jk/string-list-static-init 2016-06-13 10:37:48 -07:00
log.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
ls-files.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
ls-remote.c avoid using fixed PATH_MAX buffers for refs 2017-03-30 14:59:50 -07:00
ls-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
mailinfo.c prefix_filename: return newly allocated string 2017-03-21 11:18:41 -07:00
mailsplit.c mailinfo & mailsplit: check for EOF while parsing 2017-05-08 12:18:19 +09:00
merge-base.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
merge-file.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
merge-index.c Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZ 2017-03-26 22:08:21 -07:00
merge-ours.c
merge-recursive.c i18n: merge-recursive: mark verbose message for translation 2016-09-15 13:17:32 -07:00
merge-tree.c Convert lookup_blob to struct object_id 2017-05-08 15:12:57 +09:00
merge.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
mktag.c usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
mktree.c mktree: plug memory leaks reported by Coverity 2017-05-08 12:18:19 +09:00
mv.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
name-rev.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
notes.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
pack-objects.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
pack-redundant.c pack-redundant: plug memory leak 2017-05-08 12:18:19 +09:00
pack-refs.c refs: delete pack_refs() in favor of refs_pack_refs() 2017-04-14 03:53:25 -07:00
patch-id.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
prune-packed.c Convert object iteration callbacks to struct object_id 2017-02-22 10:12:15 -08:00
prune.c Merge branch 'bc/object-id' 2017-05-29 12:34:43 +09:00
pull.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
push.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
read-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rebase--helper.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
receive-pack.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
reflog.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
remote-ext.c remote-{ext,fd}: print usage message on invalid arguments 2017-05-30 14:45:04 +09:00
remote-fd.c remote-{ext,fd}: print usage message on invalid arguments 2017-05-30 14:45:04 +09:00
remote.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
repack.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
replace.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rerere.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
reset.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rev-list.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rev-parse.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
revert.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
rm.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
send-pack.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
shortlog.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
show-branch.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
show-ref.c show-ref: remove a stale comment 2017-01-23 18:51:56 -08:00
stripspace.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
submodule--helper.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
symbolic-ref.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
tag.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
unpack-file.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
unpack-objects.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
update-index.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
update-ref.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
update-server-info.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
upload-archive.c upload-archive: handle "-h" option early 2017-05-30 14:45:04 +09:00
var.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
verify-commit.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
verify-pack.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
verify-tag.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
worktree.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
write-tree.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00