Fix --update --wildcards

* src/common.h (name): New field: is_wildcard.
(name_scan): Change protoype.
* src/delete.c: Update calls to name_scan.
* src/names.c (addname, add_starting_file): Initialize is_wildcard.
(namelist_match): Take two arguments.  If second one is true, return
only exact matches.
(name_scan): Likewise.  All callers updated.
(name_from_list): Skip patterns.
* src/update.c (remove_exact_name): New function.
(update_archive): Do not remove matching name, if it is a pattern.
Instead, add a new entry with the matching file name.

* tests/update04.at: New test.
* tests/Makefile.am: Add new test.
* tests/testsuite.at: Include new test.

* NEWS: Update.

tests/Makefile.am

@@ -254,6 +254,7 @@ TESTSUITE_AT = \
  update01.at\
  update02.at\
  update03.at\
+ update04.at\
  volsize.at\
  volume.at\
  verbose.at\

tests/testsuite.at

@@ -455,6 +455,7 @@ m4_include([update.at])
 m4_include([update01.at])
 m4_include([update02.at])
 m4_include([update03.at])
+m4_include([update04.at])
 
 AT_BANNER([Verifying the archive])
 m4_include([verify.at])

tests/update04.at

@@ -0,0 +1,56 @@
+# Process this file with autom4te to create testsuite. -*- Autotest -*-
+# Test suite for GNU tar.
+# Copyright 2016-2023 Free Software Foundation, Inc.
+#
+# This file is part of GNU tar.
+#
+# GNU tar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GNU tar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([update with wildcards])
+AT_KEYWORDS([update update04 wildcards])
+
+AT_TAR_CHECK([
+genfile --file file.a
+genfile --file file.b
+genfile --file file.c
+echo Create
+tar cf archive ./file.*
+sleep 1
+echo "update" > file.b
+echo First update
+tar ufv archive --wildcards './file.*'
+
+echo "Second update"
+tar ufv archive --wildcards './file.*'
+
+echo "Non-matching pattern"
+tar ufv archive --wildcards './file.*' './foo.*'
+echo $?
+],
+[0],
+[Create
+First update
+./file.b
+Second update
+Non-matching pattern
+2
+],
+[tar: ./foo.*: Not found in archive
+tar: Exiting with failure status due to previous errors
+])
+
+AT_CLEANUP
+
+
+