diff tests/test-worker.t @ 50725:7e5be4a7cda7 stable

tests: use grep -E instead of obsolescent egrep

Testing on Fedora 38 failed with:
  egrep: warning: egrep is obsolescent; using grep -E

The warning comes from
https://git.savannah.gnu.org/cgit/grep.git/commit/?id=a9515624709865d480e3142fd959bccd1c9372d1
. For further anecdotal evidence of the change, see
https://www.phoronix.com/news/GNU-Grep-3.8-Stop-egrep-fgrep .

This reverses the code check that goes back to e7d3b509af8b. grep -E is POSIX,
but there is a risk that it doesn't work the same on all platforms - especially
older Unix versions. It should however always be possible to put a GNU grep in
$PATH before running the tests.

--- a/tests/test-worker.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-worker.t	Mon Jun 26 14:34:58 2023 +0200
@@ -84,7 +84,7 @@
   [255]
 
   $ hg --config "extensions.t=$abspath" --config 'worker.numcpus=8' \
-  > test 100000.0 abort --traceback 2>&1 | egrep '(WorkerError|Abort)'
+  > test 100000.0 abort --traceback 2>&1 | grep -E '(WorkerError|Abort)'
       raise error.Abort(b'known exception')
   mercurial.error.Abort: known exception
       raise error.WorkerError(status)