fix: enable extglob before func definition for bash-5.2 compatibility

The `extglob` option changes the behavior of the shell parser, since
extended glob patterns would otherwise be syntax errors. bash-5.2
changed the way a function definition is processed by calling the parser
instead of relying on the ad-hoc code in bash-5.1 and earlier versions.
This means, in bash-5.2 the shell function was parsed without `extglob`
being enabled because the `shopt` command to enable it was part of the
function body.

Add `shopt` options for `extglob` around function definitions to address
this issue and allow bash-5.2 to correctly parse the function.

Co-authored-by: Frédéric Pierret (fepitre) <frederic.pierret@qubes-os.org>
Co-authored-by: Levente Polyak <anthraxx@archlinux.org>
Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 14ced32..8859946 100644
--- a/Makefile
+++ b/Makefile
@@ -78,7 +78,7 @@ $(1)/%: $(2)%.in $(LIBUTILS)
 	@$(RM) "$$@"
 	@{ echo -n 'm4_changequote([[[,]]])'; cat $$<; } | m4 -P --define=m4_devtools_version=$$(BUILDTOOLVER) | $(edit) >$$@
 	@chmod $(3) "$$@"
-	@bash -n "$$@"
+	@bash -O extglob -n "$$@"
 endef
 
 $(eval $(call buildInScript,build/bin,src/,555))