no TABs in .texi files (was: more M4sh documentation)

[Ralf Wildenhues]

Hi Paul,

Addressing only this point in this post:

* Paul Eggert wrote on Wed, Mar 22, 2006 at 10:30:45PM CET:
> Ralf Wildenhues <address@hidden> writes:
> 
> > Other issues fixed in this version: do not use TABs in .texi files
> > (could that be checked, say, in Makefile.maint?)
> 
> I don't see why not.

Good (assuming your comment applies to the parenthesized part).
OK to apply this?  Since this file is shared, do I have to notify
other people before committing?

Cheers,
Ralf

        * Makefile.maint (sc_texi_notab): New check: do not use TABs
        in texinfo files.
        (syntax-check-rules): Update.
        * doc/autoconf.texi (Configuration Headers): Conform to it.

Index: Makefile.maint
===================================================================
RCS file: /cvsroot/autoconf/autoconf/Makefile.maint,v
retrieving revision 1.33
diff -u -r1.33 Makefile.maint
--- Makefile.maint      6 Jan 2006 00:02:26 -0000       1.33
+++ Makefile.maint      24 Mar 2006 18:18:08 -0000
@@ -103,7 +103,8 @@
   sc_system_h_headers \
   sc_tight_scope \
   sc_trailing_space \
-  sc_unmarked_diagnostics
+  sc_unmarked_diagnostics \
+  sc_texi_notab
 
 syntax-check: $(syntax-check-rules)
 #      @grep -nE '#  *include <(limits|std(def|arg|bool))\.h>'         \
@@ -173,6 +174,12 @@
 
 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
 
+# Do not use TABs in .texi files.
+sc_texi_notab:
+       @grep '[        ]' $(srcdir)/doc/*texi &&                       \
+         { echo '$(ME): Do not use TABs in .texi files'                \
+               1>&2; exit 1; } || :
+
 # Each nonempty line must start with a year number, or a TAB.
 sc_changelog:
        @grep -n '^[^12 ]' $$(find . -maxdepth 2 -name ChangeLog) &&    \
Index: doc/autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.971
diff -u -r1.971 autoconf.texi
--- doc/autoconf.texi   21 Mar 2006 21:51:07 -0000      1.971
+++ doc/autoconf.texi   24 Mar 2006 18:18:09 -0000
@@ -2757,7 +2757,7 @@
 
 @example
 AC_CONFIG_COMMANDS_PRE(
-       [m4_ifndef([AH_HEADER], [AC_CONFIG_HEADERS([config.h])])])
+        [m4_ifndef([AH_HEADER], [AC_CONFIG_HEADERS([config.h])])])
 @end example
 
 @end defmac