accept <case> and [cond] in ChangeLog

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>
(cherry picked from commit a759bfc7cf238b9fc5bf97884297fc69d8cdf2b5)

contrib/gcc-changelog/git_commit.py

@@ -154,6 +154,7 @@ changelog_regex = re.compile(r'^(?:[fF]or +)?([a-z0-9+-/]*)ChangeLog:?')
 pr_regex = re.compile(r'\tPR (?P<component>[a-z+-]+\/)?([0-9]+)$')
 dr_regex = re.compile(r'\tDR ([0-9]+)$')
 star_prefix_regex = re.compile(r'\t\*(?P<spaces>\ *)(?P<content>.*)')
+end_of_location_regex = re.compile(r'[\[<(:]')
 
 LINE_LIMIT = 100
 TAB_WIDTH = 8
@@ -204,14 +205,13 @@ class ChangeLogEntry:
                 line = m.group('content')
 
             if in_location:
-                # Strip everything that is not a filename in "line": entities
-                # "(NAME)", entry text (the colon, if present, and anything
-                # that follows it).
-                if '(' in line:
-                    line = line[:line.index('(')]
-                    in_location = False
-                if ':' in line:
-                    line = line[:line.index(':')]
+                # Strip everything that is not a filename in "line":
+                # entities "(NAME)", cases "<PATTERN>", conditions
+                # "[COND]", entry text (the colon, if present, and
+                # anything that follows it).
+                m = end_of_location_regex.search(line)
+                if m:
+                    line = line[:m.start()]
                     in_location = False
 
                 # At this point, all that's left is a list of filenames

contrib/gcc-changelog/test_email.py

@@ -361,3 +361,7 @@ class TestGccChangelog(unittest.TestCase):
         assert '\tBackported from master:' in entry
         assert '\t2020-06-11  Martin Liska  <mliska@suse.cz>' in entry
         assert '\t\t    Jakub Jelinek  <jakub@redhat.com>' in entry
+
+    def test_square_and_lt_gt(self):
+        email = self.from_patch_glob('0001-Check-for-more-missing')
+        assert not email.errors

contrib/gcc-changelog/test_patches.txt

@@ -3160,3 +3160,38 @@ index 823eb539993..4ec22162c12 100644
 -- 
 2.27.0
 
+=== 0001-Check-for-more-missing-math-decls-on-vxworks.patch ===
+From 0edfc1fd22405ee8e946101e44cd8edc0ee12047 Mon Sep 17 00:00:00 2001
+From: Douglas B Rupp <douglas.b.rupp@gmail.com>
+Date: Sun, 31 May 2020 13:25:28 -0700
+Subject: [PATCH] Check for more missing math decls on vxworks.
+
+Use the GLIBCXX_CHECK_MATH_DECL macro to check for the full list of
+vxworks math decls.
+
+for libstdc++-v3/ChangeLog:
+
+	* crossconfig.m4 <*-vxworks>: Check for more math decls.
+	* configure [FAKEPATCH]: Rebuild.
+---
+ libstdc++-v3/configure      | 255 ++++++++++++++++++++++++++++++++++++++++++++
+ libstdc++-v3/crossconfig.m4 |   3 +-
+ 2 files changed, 257 insertions(+), 1 deletion(-)
+
+diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
+index b5beb45..4ef678e 100755
+--- a/libstdc++-v3/configure
++++ b/libstdc++-v3/configure
+@@ -1 +1,2 @@
+ 
++
+diff --git a/libstdc++-v3/crossconfig.m4 b/libstdc++-v3/crossconfig.m4
+index fe18288..313f84d 100644
+--- a/libstdc++-v3/crossconfig.m4
++++ b/libstdc++-v3/crossconfig.m4
+@@ -1 +1,2 @@
+ 
++
+-- 
+2.7.4
+