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* rs/more-uses-of-skip-prefix:
use skip_prefix() to avoid more magic numbers
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Continue where ae021d87 (use skip_prefix to avoid magic numbers) left off
and use skip_prefix() in more places for determining the lengths of prefix
strings to avoid using dependent constants and other indirect methods.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move the interface declaration for the functions in lockfile.c from
cache.h to a new file, lockfile.h. Add #includes where necessary (and
remove some redundant includes of cache.h by files that already
include builtin.h).
Move the documentation of the lock_file state diagram from lockfile.c
to the new header file.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update git_config() users with callback functions for a very narrow
scope with calls to config-set API that lets us query a single
variable.
* ta/config-set-2:
builtin/apply.c: replace `git_config()` with `git_config_get_string_const()`
merge-recursive.c: replace `git_config()` with `git_config_get_int()`
ll-merge.c: refactor `read_merge_config()` to use `git_config_string()`
fast-import.c: replace `git_config()` with `git_config_get_*()` family
branch.c: replace `git_config()` with `git_config_get_string()
alias.c: replace `git_config()` with `git_config_get_string()`
imap-send.c: replace `git_config()` with `git_config_get_*()` family
pager.c: replace `git_config()` with `git_config_get_value()`
builtin/gc.c: replace `git_config()` with `git_config_get_*()` family
rerere.c: replace `git_config()` with `git_config_get_*()` family
fetchpack.c: replace `git_config()` with `git_config_get_*()` family
archive.c: replace `git_config()` with `git_config_get_bool()` family
read-cache.c: replace `git_config()` with `git_config_get_*()` family
http-backend.c: replace `git_config()` with `git_config_get_bool()` family
daemon.c: replace `git_config()` with `git_config_get_bool()` family
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Applying a patch not generated by Git in a subdirectory used to
check the whitespace breakage using the attributes for incorrect
paths. Also whitespace checks were performed even for paths
excluded via "git apply --exclude=<path>" mechanism.
* jc/apply-ws-prefix:
apply: omit ws check for excluded paths
apply: hoist use_patch() helper for path exclusion up
apply: use the right attribute for paths in non-Git patches
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Use `git_config_get_string_const()` instead of `git_config()` to take
advantage of the config-set API which provides a cleaner control flow.
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Whitespace breakages are checked while the patch is being parsed.
Disable them at the beginning of parse_chunk(), where each
individual patch is parsed, immediately after we learn the name of
the file the patch applies to and before we start parsing the diff
contained in the patch.
One may naively think that we should be able to not just skip the
whitespace checks but simply fast-forward to the next patch without
doing anything once use_patch() tells us that this patch is not
going to be used. But in reality we cannot really skip much of the
parsing in order to do such a "fast-forward", primarily because
parsing "@@ -k,l +m,n @@" lines and counting the input lines is how
we determine the boundaries of individual patches.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We will be adding a caller to the function a bit earlier in this
file in a later patch.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We parse each patchfile and find the name of the path the patch
applies to, and then use that name to consult the attribute system
to find the whitespace rules to be used, and also the target file
(either in the working tree or in the index) to replay the changes
against.
Unlike a Git-generated patch, a non-Git patch is taken to have the
pathnames relative to the current working directory. The names
found in such a patch are modified by prepending the prefix by the
prefix_patches() helper function introduced in 56185f49 (git-apply:
require -p<n> when working in a subdirectory., 2007-02-19).
However, this prefixing is done after the patch is fully parsed and
affects only what target files are patched. Because the attributes
are checked against the names found in the patch during the parsing,
not against the final pathname, the whitespace check that is done
during parsing ends up using attributes for a wrong path for non-Git
patches.
Fix this by doing the prefix much earlier, immediately after the
header part of each patch is parsed and we learn the name of the
path the patch affects.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jk/misc-fixes-maint:
apply: avoid possible bogus pointer
fix memory leak parsing core.commentchar
transport: fix leaks in refs_from_alternate_cb
free ref string returned by dwim_ref
receive-pack: don't copy "dir" parameter
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When parsing "index" lines from a git-diff, we look for a
space followed by the mode. If we don't have a space, then
we set our pointer to the end-of-line. However, we don't
double-check that our end-of-line pointer is valid (e.g., if
we got a truncated diff input), which could lead to some
wrap-around pointer arithmetic.
In most cases this would probably get caught by our "40 <
len" check later in the function, but to be on the safe
side, let's just use strchrnul to treat end-of-string the
same as end-of-line.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
use xmemdupz() to allocate copies of strings given by start and length
use xcalloc() to allocate zero-initialized memory
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Use xmemdupz() to allocate the memory, copy the data and make sure to
NUL-terminate the result, all in one step. The resulting code is
shorter, doesn't contain the constants 1 and '\0', and avoids
duplicating function parameters.
For blame, the last copied byte (o->file.ptr[o->file.size]) is always
set to NUL by fake_working_tree_commit() or read_sha1_file(), so no
information is lost by the conversion to using xmemdupz().
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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An experiment to use two files (the base file and incremental
changes relative to it) to represent the index to reduce I/O cost
of rewriting a large index when only small part of the working tree
changes.
* nd/split-index: (32 commits)
t1700: new tests for split-index mode
t2104: make sure split index mode is off for the version test
read-cache: force split index mode with GIT_TEST_SPLIT_INDEX
read-tree: note about dropping split-index mode or index version
read-tree: force split-index mode off on --index-output
rev-parse: add --shared-index-path to get shared index path
update-index --split-index: do not split if $GIT_DIR is read only
update-index: new options to enable/disable split index mode
split-index: strip pathname of on-disk replaced entries
split-index: do not invalidate cache-tree at read time
split-index: the reading part
split-index: the writing part
read-cache: mark updated entries for split index
read-cache: save deleted entries in split index
read-cache: mark new entries for split index
read-cache: split-index mode
read-cache: save index SHA-1 after reading
entry.c: update cache_changed if refresh_cache is set in checkout_entry()
cache-tree: mark istate->cache_changed on prime_cache_tree()
cache-tree: mark istate->cache_changed on cache tree update
...
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* jk/xstrfmt:
setup_git_env(): introduce git_path_from_env() helper
unique_path: fix unlikely heap overflow
walker_fetch: fix minor memory leak
merge: use argv_array when spawning merge strategy
sequencer: use argv_array_pushf
setup_git_env: use git_pathdup instead of xmalloc + sprintf
use xstrfmt to replace xmalloc + strcpy/strcat
use xstrfmt to replace xmalloc + sprintf
use xstrdup instead of xmalloc + strcpy
use xstrfmt in favor of manual size calculations
strbuf: add xstrfmt helper
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"--ignore-space-change" option of "git apply" ignored the spaces
at the beginning of line too aggressively, which is inconsistent
with the option of the same name "diff" and "git diff" have.
* jc/apply-ignore-whitespace:
apply --ignore-space-change: lines with and without leading whitespaces do not match
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A submodule diff generally has content like:
-Subproject commit [0-9a-f]{40}
+Subproject commit [0-9a-f]{40}
When we are using "git apply --index" with a submodule, we
first apply the textual diff, and then parse that result to
figure out the new sha1.
If the diff has bogus input like:
-Subproject commit 1234567890123456789012345678901234567890
+bogus
we will parse the "bogus" portion. Our parser assumes that
the buffer starts with "Subproject commit", and blindly
skips past it using strlen(). This can cause us to read
random memory after the buffer.
This problem was unlikely to have come up in practice (since
it requires a malformed diff), and even when it did, we
likely noticed the problem anyway as the next operation was
to call get_sha1_hex on the random memory.
However, we can easily fix it by using skip_prefix to notice
the parsing error.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It's easy to get manual allocation calculations wrong, and
the use of strcpy/strcat raise red flags for people looking
for buffer overflows (though in this case each site was
fine).
It's also shorter to use xstrfmt, and the printf-format
tends to be easier for a reader to see what the final string
will look like.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Other fill_stat_cache_info() is on new entries, which should set
CE_ENTRY_ADDED in cache_changed, so we're safe.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"--ignore-space-change" option of "git apply" ignored the
spaces at the beginning of line too aggressively, which is
inconsistent with the option of the same name "diff" and "git diff"
have.
* jc/apply-ignore-whitespace:
apply --ignore-space-change: lines with and without leading whitespaces do not match
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Eradicate mistaken use of "nor" (that is, essentially "nor" used
not in "neither A nor B" ;-)) from in-code comments, command output
strings, and documentations.
* jl/nor-or-nand-and:
code and test: fix misuses of "nor"
comments: fix misuses of "nor"
contrib: fix misuses of "nor"
Documentation: fix misuses of "nor"
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Signed-off-by: Justin Lebar <jlebar@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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not match
The fuzzy_matchlines() function is used when attempting to resurrect
a patch that is whitespace-damaged, or when applying a patch that
was produced against an old codebase to the codebase after
indentation change.
The patch may want to change a line "a_bc" ("_" is used throught
this description for a whitespace to make it stand out) in the
original into something else, and we may not find "a_bc" in the
current source, but there may be "a__bc" (two spaces instead of one
the whitespace-damaged patch claims to expect). By ignoring the
amount of whitespaces, it forces "git apply" to consider that "a_bc"
in the broken patch meant to refer to "a__bc" in reality.
However, the implementation special cases a run of whitespaces at
the beginning of a line and makes "abc" match "_abc", even though a
whitespace in the middle of string never matches a 0-width gap,
e.g. "a_bc" does not match "abc". A run of whitespace at the end of
one string does not match a 0-width end of line on the other line,
either, e.g. "abc_" does not match "abc".
Fix this inconsistency by making the code skip leading whitespaces
only when both strings begin with a whitespace. This makes the
option mean the same as the option of the same name in "diff" and
"git diff".
Note that I am not sure if anybody sane should use this option in
the first place. The fuzzy match logic may be able to find the
original line that the patch author may have meant to touch because
it does not fully trust what the original lines say (i.e. context
lines prefixed by " " and old lines prefixed by "-" does not have to
exactly match the contents the patch is applied to). There is no
reason for us to trust what the replacement lines (i.e. new lines
prefixed by "+") say, either, but with this option enabled, we end
up copying these new lines with suspicious whitespace distributions
literally into the patched result. But as long as we keep it, we
should make it do its insane thing consistently.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We started using wildmatch() in place of fnmatch(3); complete the
process and stop using fnmatch(3).
* nd/no-more-fnmatch:
actually remove compat fnmatch source code
stop using fnmatch (either native or compat)
Revert "test-wildmatch: add "perf" command to compare wildmatch and fnmatch"
use wildmatch() directly without fnmatch() wrapper
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Shrink lifetime of variables by moving their definitions to an
inner scope where appropriate.
* ep/varscope:
builtin/gc.c: reduce scope of variables
builtin/fetch.c: reduce scope of variable
builtin/commit.c: reduce scope of variables
builtin/clean.c: reduce scope of variable
builtin/blame.c: reduce scope of variables
builtin/apply.c: reduce scope of variables
bisect.c: reduce scope of variable
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Make it clear that we don't use fnmatch() anymore.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leaving only the function definitions and declarations so that any
new topic in flight can still make use of the old functions, replace
existing uses of the prefixcmp() and suffixcmp() with new API
functions.
The change can be recreated by mechanically applying this:
$ git grep -l -e prefixcmp -e suffixcmp -- \*.c |
grep -v strbuf\\.c |
xargs perl -pi -e '
s|!prefixcmp\(|starts_with\(|g;
s|prefixcmp\(|!starts_with\(|g;
s|!suffixcmp\(|ends_with\(|g;
s|suffixcmp\(|!ends_with\(|g;
'
on the result of preparatory changes in this series.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This task emerged from b04ba2bb (parse-options: deprecate OPT_BOOLEAN,
2011-09-27). All occurrences of the respective variables have
been reviewed and none of them relied on the counting up mechanism,
but all of them were using the variable as a true boolean.
This patch does not change semantics of any command intentionally.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* nd/const-struct-cache-entry:
Convert "struct cache_entry *" to "const ..." wherever possible
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* tr/do-not-call-submodules-subprojects:
show-branch: fix description of --date-order
apply, entry: speak of submodules instead of subprojects
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The name marc.theaimsgroup.com is no longer active, and has
migrated to marc.info.
Signed-off-by: Ondřej Bílka <neleai@seznam.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The variable len is set to
len = strchrnul(line, '\n') - line;
unconditionally 9 lines later, hence we can remove the call to strlen.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* rs/logical-vs-binary-or:
use logical OR (||) instead of binary OR (|) in logical context
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There are only four (with some generous rounding) instances in the
current source code where we speak of "subproject" instead of
"submodule". They are as follows:
* one error message in git-apply and two in entry.c
* the patch format for submodule changes
The latter was introduced in 0478675 (Expose subprojects as special
files to "git diff" machinery, 2007-04-15), apparently before the
terminology was settled. We can of course not change the patch
format.
Let's at least change the error messages to consistently call them
"submodule".
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git apply" parsed patches that add new files, generated by programs
other than Git, incorrectly. This is an old breakage in v1.7.11.
* tr/maint-apply-non-git-patch-parsefix:
apply: carefully strdup a possibly-NULL name
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I attempted to make index_state->cache[] a "const struct cache_entry **"
to find out how existing entries in index are modified and where. The
question I have is what do we do if we really need to keep track of on-disk
changes in the index. The result is
- diff-lib.c: setting CE_UPTODATE
- name-hash.c: setting CE_HASHED
- preload-index.c, read-cache.c, unpack-trees.c and
builtin/update-index: obvious
- entry.c: write_entry() may refresh the checked out entry via
fill_stat_cache_info(). This causes "non-const struct cache_entry
*" in builtin/apply.c, builtin/checkout-index.c and
builtin/checkout.c
- builtin/ls-files.c: --with-tree changes stagemask and may set
CE_UPDATE
Of these, write_entry() and its call sites are probably most
interesting because it modifies on-disk info. But this is stat info
and can be retrieved via refresh, at least for porcelain
commands. Other just uses ce_flags for local purposes.
So, keeping track of "dirty" entries is just a matter of setting a
flag in index modification functions exposed by read-cache.c. Except
unpack-trees, the rest of the code base does not do anything funny
behind read-cache's back.
The actual patch is less valueable than the summary above. But if
anyone wants to re-identify the above sites. Applying this patch, then
this:
diff --git a/cache.h b/cache.h
index 430d021..1692891 100644
--- a/cache.h
+++ b/cache.h
@@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode)
#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
struct index_state {
- struct cache_entry **cache;
+ const struct cache_entry **cache;
unsigned int version;
unsigned int cache_nr, cache_alloc, cache_changed;
struct string_list *resolve_undo;
will help quickly identify them without bogus warnings.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix for the codepath to parse patches that add new files, generated
by programs other than Git. THis is an old breakage in v1.7.11 and
will need to be merged down to the maintanance tracks.
* tr/maint-apply-non-git-patch-parsefix:
apply: carefully strdup a possibly-NULL name
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2901bbe (apply: free patch->{def,old,new}_name fields, 2012-03-21)
cleaned up the memory management of filenames in the patches, but
forgot that find_name_traditional() can return NULL as a way of saying
"I couldn't find a name".
That NULL unfortunately gets passed into xstrdup() next, resulting in
a segfault. Use null_strdup() so as to safely propagate the null,
which will let us emit the correct error message.
Reported-by: DevHC on #git
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The compiler can short-circuit the evaluation of conditions strung
together with logical OR operators instead of computing the resulting
bitmask with binary ORs. More importantly, this patch makes the
intent of the changed code clearer, because the logical context (as
opposed to binary context) becomes immediately obvious.
While we're at it, simplify the check for patch->is_rename in
builtin/apply.c a bit; it can only be 0 or 1, so we don't need a
comparison operator.
Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
Correct common spelling mistakes in comments and tests
kwset: fix spelling in comments
precompose-utf8: fix spelling of "want" in error message
compat/nedmalloc: fix spelling in comments
compat/regex: fix spelling and grammar in comments
obstack: fix spelling of similar
contrib/subtree: fix spelling of accidentally
git-remote-mediawiki: spelling fixes
doc: various spelling fixes
fast-export: fix argument name in error messages
Documentation: distinguish between ref and offset deltas in pack-format
i18n: make the translation of -u advice in one go
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Most of these were found using Lucas De Marchi's codespell tool.
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git apply --whitespace=fix" was not prepared to see a line getting
longer after fixing whitespaces (e.g. tab-in-indent aka Python).
* jc/apply-ws-fix-tab-in-indent:
test: resurrect q_to_tab
apply --whitespace=fix: avoid running over the postimage buffer
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Originally update-pre-post-images could assume that any whitespace
fixing will make the result only shorter by unexpanding runs of
leading SPs into HTs and removing trailing whitespaces at the end of
lines. Updating the post-image we read from the patch to match the
actual result can be performed in-place under this assumption.
These days, however, we have tab-in-indent (aka Python) rule whose
result can be longer than the original, and we do need to allocate
a larger buffer than the input and replace the result.
Fortunately the support for lengthening rewrite was already added
when we began supporting "match while ignoring whitespace
differences" mode in 86c91f91794c (git apply: option to ignore
whitespace differences, 2009-08-04). We only need to correctly
count the number of bytes necessary to hold the updated result and
tell the function to allocate a new buffer.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Instead of requiring the full 40-hex object names on the index
line, we can read submodule commit object names from the textual
diff when synthesizing a fake ancestore tree for "git am -3".
* jc/extended-fake-ancestor-for-gitlink:
apply: verify submodule commit object name better
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Make sure the similarity value shown in the "apply --summary"
output is sensible, even when the input had a bogus value.
* jk/apply-similaritly-parsing:
builtin/apply: tighten (dis)similarity index parsing
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Rebasing the history of superproject with change in the submodule
was broken since v1.7.12.
* jc/fake-ancestor-with-non-blobs:
apply: diagnose incomplete submodule object name better
apply: simplify build_fake_ancestor()
git-am: record full index line in the patch used while rebasing
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