bug#32800: [PATCH/committed] tests: make silent-custom regex a little more robust

[Mike Frysinger]

Fixes automake bug https://bugs.gnu.org/32800.

Have the regex match the entire path with word boundaries on both
sides.  This should reduce false positives when the full cwd happens
to match parent directories.

* t/silent-custom.sh: Update the header output regex.
---
 t/silent-custom.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/silent-custom.sh b/t/silent-custom.sh
index 01cf464b99eb..977255b1312e 100644
--- a/t/silent-custom.sh
+++ b/t/silent-custom.sh
@@ -74,7 +74,7 @@ do_check ()
     $FGREP 'cp ' output && exit 1
     $FGREP 'generate-header' output && exit 1
     $FGREP 'rm -f' output && exit 1
-    grep '[012]\.h' output && exit 1
+    grep '\bsub/[012]\.h\b' output && exit 1
     grep '^ XGEN    foo$' output
     grep '^ GEN     \[headers\]$' output
   else
-- 
2.34.1