Patch: new test and fix for `.c++' extension

[Tom Tromey]

This is sort of hacky, but I'm checking it in nevertheless.
It tests for and fixes a bug when using the `.c++' extension.

Tom

Index: ChangeLog
from  Tom Tromey  <address@hidden>
        Report from Ralf Corsepius:
        * automake.in (TARGET_PATTERN): Add `+' as valid character.
        (SUFFIX_RULE_PATTERN): Likewise.
        * tests/Makefile.am (TESTS): Added cxx.test.
        * tests/cxx.test: New file.

Index: automake.in
===================================================================
RCS file: /cvs/automake/automake/automake.in,v
retrieving revision 1.1150
diff -u -r1.1150 automake.in
--- automake.in 2001/07/14 17:15:03 1.1150
+++ automake.in 2001/07/15 21:52:43
@@ -133,13 +133,13 @@
 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
 my $WHITE_PATTERN = '^\s*$';
 my $COMMENT_PATTERN = '^#';
-my $TARGET_PATTERN='[$a-zA-Z_.][-.a-zA-Z0-9_(){}/$]*';
+my $TARGET_PATTERN='[$a-zA-Z_.][-.a-zA-Z0-9_(){}/$+]*';
 # A rule has three parts: a list of targets, a list of dependencies,
 # and optionally actions.
 my $RULE_PATTERN =
   "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
 
-my $SUFFIX_RULE_PATTERN = '^\.([a-zA-Z0-9]+)\.([a-zA-Z0-9]+)$';
+my $SUFFIX_RULE_PATTERN = '^\.([a-zA-Z0-9+]+)\.([a-zA-Z0-9+]+)$';
 # Only recognize leading spaces, not leading tabs.  If we recognize
 # leading tabs here then we need to make the reader smarter, because
 # otherwise it will think rules like `foo=bar; \' are errors.
Index: tests/Makefile.am
===================================================================
RCS file: /cvs/automake/automake/tests/Makefile.am,v
retrieving revision 1.321
diff -u -r1.321 Makefile.am
--- tests/Makefile.am 2001/07/05 01:19:35 1.321
+++ tests/Makefile.am 2001/07/15 21:52:43
@@ -82,6 +82,7 @@
 confvar2.test \
 copy.test \
 ctarget1.test \
+cxx.test \
 cxxansi.test \
 cxxcpp.test \
 cxxlibobj.test \
Index: tests/Makefile.in
===================================================================
RCS file: /cvs/automake/automake/tests/Makefile.in,v
retrieving revision 1.421
diff -u -r1.421 Makefile.in
--- tests/Makefile.in 2001/07/05 01:19:35 1.421
+++ tests/Makefile.in 2001/07/15 21:52:44
@@ -148,6 +148,7 @@
 confvar2.test \
 copy.test \
 ctarget1.test \
+cxx.test \
 cxxansi.test \
 cxxcpp.test \
 cxxlibobj.test \