-# There are many rules below that prohibit constructs in this package.
-# If the offending construct can be matched with a grep-E-style regexp,
-# use this macro. The shell variables "re" and "msg" must be defined.
-define _prohibit_regexp
- dummy=; : so we do not need a semicolon before each use; \
- test "x$$re" != x || { echo '$(ME): re not defined' 1>&2; exit 1; }; \
- test "x$$msg" != x || { echo '$(ME): msg not defined' 1>&2; exit 1; };\
- grep $(_ignore_case) -nE "$$re" $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): '"$$msg" 1>&2; exit 1; } || :
+define _sc_say_and_exit
+ dummy=; : so we do not need a semicolon before each use; \
+ { echo -e "$(ME): $$msg" 1>&2; exit 1; };
+endef
+
+define _sc_search_regexp
+ dummy=; : so we do not need a semicolon before each use; \
+ \
+ : Check arguments; \
+ test -n "$$prohibit" && test -n "$$require" \
+ && { msg='Cannot specify both prohibit and require' \
+ $(_sc_say_and_exit) } || :; \
+ test -z "$$prohibit" && test -z "$$require" \
+ && { msg='Should specify either prohibit or require' \
+ $(_sc_say_and_exit) } || :; \
+ test -n "$$in_vc_files" && test -n "$$in_files" \
+ && { msg='Cannot specify both in_vc_files and in_files' \
+ $(_sc_say_and_exit) } || :; \
+ test "x$$halt" != x \
+ || { msg='halt not defined' $(_sc_say_and_exit) }; \
+ \
+ : Filter by file name; \
+ if test -n "$$in_files"; then \
+ files=$$(find $(srcdir) | grep -E "$$in_files"); \
+ else \
+ files=$$($(VC_LIST_EXCEPT)); \
+ if test -n "$$in_vc_files"; then \
+ files=$$(echo "$$files" | grep -E "$$in_vc_files"); \
+ fi; \
+ fi; \
+ \
+ : Filter by content; \
+ test -n "$$files" && test -n "$$containing" \
+ && { files=$$(grep -l "$$containing" $$files); } || :; \
+ test -n "$$files" && test -n "$$non_containing" \
+ && { files=$$(grep -vl "$$non_containing" $$files); } || :; \
+ \
+ : Check for the construct; \
+ if test -n "$$files"; then \
+ if test -n "$$prohibit"; then \
+ grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
+ && { msg="$$halt" $(_sc_say_and_exit) } || :; \
+ else \
+ grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
+ | grep . \
+ && { msg="$$halt" $(_sc_say_and_exit) } || :; \
+ fi \
+ else :; \
+ fi || :;