diff tests/test-template-map.t @ 50722:7e5be4a7cda7 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-template-map.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-template-map.t	Mon Jun 26 14:34:58 2023 +0200
@@ -227,7 +227,7 @@
   $ hg log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log -T phases > phases.out
-  $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
+  $ diff -U 0 log.out phases.out | grep -E -v '^---|^\+\+\+|^@@'
   +phase:       draft
   +phase:       draft
   +phase:       draft
@@ -243,7 +243,7 @@
   $ hg log -v --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log -v -T phases > phases.out
-  $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
+  $ diff -U 0 log.out phases.out | grep -E -v '^---|^\+\+\+|^@@'
   +phase:       draft
   +phase:       draft
   +phase:       draft
@@ -299,7 +299,7 @@
   $ hg --color=debug log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug log -T phases > phases.out
-  $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
+  $ diff -U 0 log.out phases.out | grep -E -v '^---|^\+\+\+|^@@'
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
@@ -315,7 +315,7 @@
   $ hg --color=debug -v log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug -v log -T phases > phases.out
-  $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
+  $ diff -U 0 log.out phases.out | grep -E -v '^---|^\+\+\+|^@@'
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]