[yelp-tools] yelp.m4: Prepare for multiple options case

[Shaun McCance <shaunm src gnome org>]

commit 4c6c5bab66c7fe0ad419ff573cd65b6bb0ec8002
Author: Christian Persch <chpe gnome org>
Date:   Sun Nov 24 23:12:30 2013 +0100

    yelp.m4: Prepare for multiple options case
    
    Bug #672919.

 tools/yelp.m4 |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/tools/yelp.m4 b/tools/yelp.m4
index d1a90fc..af56c45 100644
--- a/tools/yelp.m4
+++ b/tools/yelp.m4
@@ -5,16 +5,16 @@ m4_pattern_allow([AM_V_at])
 m4_pattern_allow([AM_V_GEN])
 m4_pattern_allow([AM_DEFAULT_VERBOSITY])
 
-YELP_NO_LC_MEDIA_LINKS="";
+YELP_LC_MEDIA_LINKS=true
+
 for yelpopt in [$1]; do
-  if test "x$yelpopt" = "xno-lc-media-links"; then
-    YELP_NO_LC_MEDIA_LINKS="no-lc-media-links";
-  else
-    echo "Unrecognized [YELP_HELP_INIT] option $yelpopt" 1>&2;
-    exit 1;
-  fi;
+  case $yelpopt in
+    lc-media-links)    YELP_LC_MEDIA_LINKS=true ;;
+    no-lc-media-links) YELP_LC_MEDIA_LINKS= ;;
+    *) AC_MSG_ERROR([Unrecognized [YELP_HELP_INIT] option $yelpopt"]) ;;
+  esac
 done;
-AC_SUBST(YELP_NO_LC_MEDIA_LINKS)
+AC_SUBST([YELP_LC_MEDIA_LINKS])
 
 AC_ARG_WITH([help-dir],
             AC_HELP_STRING([--with-help-dir=DIR],
@@ -174,7 +174,7 @@ install-help:
              echo "$(INSTALL_DATA) $$d$$lc/$$f $$helpdir$$f"; \
              $(INSTALL_DATA) "$$d$$lc/$$f" "$$helpdir$$f" || exit 1; \
            elif test "x$$lc" != "xC"; then \
-             if test "x$(YELP_NO_LC_MEDIA_LINKS)" != "xno-lc-media-links"; then \
+             if test "x$(YELP_LC_MEDIA_LINKS)" != "x"; then \
                echo "$(LN_S) -f $(HELP_DIR)/C/$(HELP_ID)/$$f $$helpdir$$f"; \
                $(LN_S) -f "$(HELP_DIR)/C/$(HELP_ID)/$$f" "$$helpdir$$f" || exit 1; \
              fi; \