From 3469ae808543e31ab3bd77358fb87820d6d26e07 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Thu, 8 Apr 2004 15:38:43 +0000
Subject: (sc_dd_max_sym_length): New target. (syntax-check-rules): Add it.

---
 Makefile.maint | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Makefile.maint b/Makefile.maint
index efa14d1f2..44a93f9a7 100644
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -70,6 +70,7 @@ syntax-check-rules = \
   sc_cast_of_x_alloc_return_value \
   sc_cast_of_alloca_return_value \
   sc_changelog \
+  sc_dd_max_sym_length \
   sc_error_exit_success \
   sc_prohibit_atoi_atof \
   sc_space_tab \
@@ -149,6 +150,21 @@ sc_changelog:
 	  { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2;	\
 	    exit 1; } || :
 
+# Ensure that dd's definition of LONGEST_SYMBOL stays in sync
+# with the strings from the two affected variables.
+dd_c = $(srcdir)/src/dd.c
+sc_dd_max_sym_length:
+	len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);	\
+		 sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )	\
+		|sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'		\
+              | wc --max-line-length);				\
+	max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c)	\
+	      |tr -d '"' | wc --max-line-length);		\
+	if test "$$len" = "$$max"; then :; else			\
+	  echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;	\
+	  exit 1;						\
+	fi
+
 header_regexp = \
   alloca\
   |closeout\
-- 
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