[PATCH v2 1/3] Makefile: factor sed-powered '#!/bin/sh' munging into a variable

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Reduce the amount of magical copy/pasting in the Makefile by factoring
the munging of "#!/bin/sh" on the first line of a shellscript into a
variable we can re-use in the various rules that need to do so.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 Makefile | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 85f03c6aed1..45b22d33513 100644
--- a/Makefile
+++ b/Makefile
@@ -2344,8 +2344,12 @@ GIT-SCRIPT-DEFINES: FORCE
 		echo "$$FLAGS" >$@; \
             fi
 
+define cmd_munge_script_sed_shell_path_arg
+'1s|#!.*/sh|#!$(SHELL_PATH_SQ)|'
+endef
+
 define cmd_munge_script
-sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+sed -e $(call cmd_munge_script_sed_shell_path_arg) \
     -e 's|@SHELL_PATH@|$(SHELL_PATH_SQ)|' \
     -e 's|@@DIFF@@|$(DIFF_SQ)|' \
     -e 's|@@LOCALEDIR@@|$(localedir_SQ)|g' \
@@ -2447,7 +2451,7 @@ git-instaweb: git-instaweb.sh GIT-SCRIPT-DEFINES
 else # NO_PERL
 $(SCRIPT_PERL_GEN) git-instaweb: % : unimplemented.sh
 	$(QUIET_GEN) \
-	sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+	sed -e $(call cmd_munge_script_sed_shell_path_arg) \
 	    -e 's|@@REASON@@|NO_PERL=$(NO_PERL)|g' \
 	    unimplemented.sh >$@+ && \
 	chmod +x $@+ && \
@@ -2468,7 +2472,7 @@ $(SCRIPT_PYTHON_GEN): % : %.py
 else # NO_PYTHON
 $(SCRIPT_PYTHON_GEN): % : unimplemented.sh
 	$(QUIET_GEN) \
-	sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+	sed -e $(call cmd_munge_script_sed_shell_path_arg) \
 	    -e 's|@@REASON@@|NO_PYTHON=$(NO_PYTHON)|g' \
 	    unimplemented.sh >$@+ && \
 	chmod +x $@+ && \
@@ -3061,7 +3065,7 @@ all:: $(TEST_PROGRAMS) $(test_bindir_programs)
 
 bin-wrappers/%: wrap-for-bin.sh
 	$(call mkdir_p_parent_template)
-	$(QUIET_GEN)sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+	$(QUIET_GEN)sed -e $(call cmd_munge_script_sed_shell_path_arg) \
 	     -e 's|@@BUILD_DIR@@|$(shell pwd)|' \
 	     -e 's|@@PROG@@|$(patsubst test-%,t/helper/test-%,$(@F))$(if $(filter-out $(BINDIR_PROGRAMS_NO_X),$(@F)),$(X),)|' < $< > $@ && \
 	chmod +x $@
-- 
2.38.0.1251.g3eefdfb5e7a




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