Makefile.in: Update whitespacecheck target to show spaces before tabs

diff --git a/Makefile.in b/Makefile.in
index 9307d55b2f47d85de23426c7e0774937230ca652..0cc45bed40be7c57cdf193778e24c7764e9560e2 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -253,6 +253,11 @@ whitespacecheck:
            echo 'Error: Trailing tabs(s).'; \
            exit 1; \
        fi
+       @# space(s) before tab(s)?
+       @if git grep -I -n '[ ][        ]' $$(git ls-files|grep -v '^tests/'); then \
+           echo 'Error: space(s) before tab(s).'; \
+           exit 1; \
+       fi
 
 depend:
        $(MKDEP) -c "$(CC)" -m "$(DEPENDENCY_CFLAG)" -s "$(srcdir)" $(DEFS) $(INCLS) $(SRC)