diff tests/test-narrow-rebase.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-narrow-rebase.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-narrow-rebase.t	Mon Jun 26 14:34:58 2023 +0200
@@ -69,7 +69,7 @@
   $ hg update -q 0
   $ echo conflicting > inside/f1
   $ hg ci -qm 'conflicting inside/f1'
-  $ hg rebase -d 'desc("modify inside/f1")' 2>&1 | egrep -v '(warning:|incomplete!)'
+  $ hg rebase -d 'desc("modify inside/f1")' 2>&1 | grep -E -v '(warning:|incomplete!)'
   rebasing 6:cdce97fbf653 tip "conflicting inside/f1"
   merging inside/f1
   unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')