contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Suggest close file for
	'unchanged file mentioned in a ChangeLog' error.
	* gcc-changelog/test_email.py: Test it.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Allow sub-directory wildcard
	changelog entry. Fix a typo caused by apostrophe escaping.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Likewise.

It handles the following:
(cherry picked from commit c0c7270c (testsuite changes only))

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Use regex for cherry pick prefix.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Likewise.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Add new check.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Add new patch.

Especially when using mklog.py, it is simply to forget to fill in
the entries after the '\t* file.c (section):' or '\t(section):'.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py (item_parenthesis_empty_regex,
	item_parenthesis_regex): Add.
	(check_for_empty_description): Use them.
	* gcc-changelog/test_email.py (test_emptry_entry_desc,
	test_emptry_entry_desc_2): Add.
	* gcc-changelog/test_patches.txt: Add two testcases for it.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Handle empty groups in
	file description.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: Likewise.

Only '(' and ':' currently terminate file lists in ChangeLog entries
in the ChangeLog parser.  This rules out such legitimate entries as:

* filename <CASE>:
* filename [COND]:

This patch extends the ChangeLog parser to recognize these forms.

for  contrib/ChangeLog

	* gcc-changelog/git_commit.py: Support CASE and COND.
	* gcc-changelog/test_patches.txt: Add test.
	* gcc-changelog/test_email.py: Add test.

Co-Authored-By: Martin Liska <mliska@suse.cz>

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Print 'Backported from master'
	heading to backported commits.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Add new patch.
	* gcc-changelog/git_repository.py: Add commit_to_date hook.
	* gcc-changelog/git_email.py: Add fuzzy implementation
	of commit_to_date_hook.

Renamed files are listed in the following format:

M	gcc/ada/Makefile.rtl
M	gcc/ada/impunit.adb
R097	gcc/ada/libgnat/s-atopar.adb	gcc/ada/libgnat/s-aoinar.adb
R095	gcc/ada/libgnat/s-atopar.ads	gcc/ada/libgnat/s-aoinar.ads
A	gcc/ada/libgnat/s-aomoar.adb
A	gcc/ada/libgnat/s-aomoar.ads

So 'R' is followed by a percentage number.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Fix renamed files in
	parse_git_name_status.
	* gcc-changelog/test_email.py: Add test for it.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Add more supported prefixes.
	* gcc-changelog/test_email.py: Fix one flake8 error.
	* gcc-changelog/test_patches.txt: Add tested for newly
	supported prefixes.

This changes some error messages to be more self-consistent and to fix
some grammar.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py (GitCommit.parse_changelog):
	Improve error strings.
	* gcc-changelog/test_email.py: Update expected errors.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Fix ChangeLog regex in order to
	match the top-level ChangeLog.
	* gcc-changelog/test_email.py: Add test.
	* gcc-changelog/test_patches.txt: Likewise.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Support foo/bar/*: patterns in
	wildcard_prefixes locations.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Add 3 new patches.

contrib/ChangeLog:

	* gcc-changelog/test_email.py (TestGccChangelog.test_long_lines):
	Update expected error message.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Find empty change descriptions.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: New patch that tests that.

The patch is about to handle situations like seen
in 3ea6977d.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Properly
	handle duplicite authors.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: New patch.

So far, we expect from a commit that renames a file to contain a
changelog entry only for the new name. For example, after the following
commit:

   $ git move foo bar
   $ git commit

We expect the following changelog:

   * bar: Renamed from foo.

Git does not keep track of renamings, only file deletions and additions.
The display of patches then uses heuristics (with config-dependent
parameters) to try to match deleted and added files in the same commit.
It is thus brittle to rely on this information.

This commit modifies changelog processing so that renames are considered
as a deletion of a file plus an addition of another file. The following
changelog is now expected for the above example:

   * foo: Move...
   * bar: Here.

contrib/

	* gcc-changelog/git_email.py (GitEmail.__init__): Interpret file
	renamings as a file deletion plus a file addition.
	* gcc-changelog/git_repository.py (parse_git_revisions):
	Likewise.
	* gcc-changelog/test_email.py: New testcase.
	* gcc-changelog/test_patches.txt: New testcase.

This extends the ChangeLog entries parsing machinery to handle entries
that cover multiple files spanning over multiple lines. For instance:

    * first_file_patched.c, second_file_patched.c, third_file_patched.c,
    fourth_file_patched.c: Do things.

contrib/

	* gcc-changelog/git_commit.py (ChangeLogEntry): Handle entries
	with multi-line file lists.
	* gcc-changelog/test_email.py: New testcase.
	* gcc-changelog/test_patches.txt: Likewise.

Currently, running gcc-changelog's unit tests may clutter the output
with tons of warnings such as:

    .../contrib/gcc-changelog/git_email.py:40: ResourceWarning: unclosed
    file <_io.TextIOWrapper name='/tmp/tmpt5okd4qp.patch' mode='r'
    encoding='UTF-8'>
      lines = open(self.filename).read().splitlines()
    ResourceWarning: Enable tracemalloc to get the object allocation
    traceback

This commit fixes these leaks, which restores a clean testsuite output.

contrib/

	* gcc-changelog/git_update_version.py: Close file objects after
	use.
	* gcc-changelog/git_email.py: Likewise.
	* gcc-changelog/test_email.py: Likewise.

We should be able to generate ChangeLog entries for
commits like b3d566f5.
I'm going to install the patch.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Parse changelog entries for
	ignored locations.
	* gcc-changelog/test_email.py: Add new test for it.
	* gcc-changelog/test_patches.txt: Likewise.

	* gcc-changelog/git_commit.py: Add trailing '/'
	for libdruntime.  Allow empty changelog for
	only ignored files.
	* gcc-changelog/test_email.py: New test for go
	patch in ignored location.
	* gcc-changelog/test_patches.txt: Add test.

	* gcc-changelog/git_commit.py: Support DR entries/
	* gcc-changelog/test_email.py: New test for it.
	* gcc-changelog/test_patches.txt: New patch for it.

	* gcc-changelog/git_commit.py: Add author_tuple
	only if not present in author_lines.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: Add new patch.

	* gcc-changelog/git_commit.py: Refactor to make flake8 happy.
	* gcc-changelog/test_email.py: Add new test.
	* gcc-changelog/test_patches.txt: Add new patch.

	* gcc-changelog/git_commit.py: Support cherry pick
	prefix.
	* gcc-changelog/test_email.py: Test it.
	* gcc-changelog/test_patches.txt: Add new patch.
	* gcc-git-customization.sh: Add gcc-backport.

	* gcc-changelog/test_email.py: New file.
	* gcc-changelog/test_patches.txt: New file.