Changes to m4/src/Attic/m4.c,v [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      07/01/28 01:54:44

Index: src/m4.c
===================================================================
RCS file: /sources/m4/m4/src/Attic/m4.c,v
retrieving revision 1.1.1.1.2.41
retrieving revision 1.1.1.1.2.42
diff -u -b -r1.1.1.1.2.41 -r1.1.1.1.2.42
--- src/m4.c    5 Jan 2007 02:58:32 -0000       1.1.1.1.2.41
+++ src/m4.c    28 Jan 2007 01:54:44 -0000      1.1.1.1.2.42
@@ -55,6 +55,9 @@
 /* If not zero, then value of exit status for warning diagnostics.  */
 int warning_status = 0;
 
+/* If true, then warn about usage of ${1} in macro definitions.  */
+bool warn_syntax = false;
+
 /* Artificial limit for expansion_level in macro.c.  */
 int nesting_limit = 1024;
 
@@ -142,10 +145,13 @@
 Operation modes:\n\
       --help                   display this help and exit\n\
       --version                output version information and exit\n\
+", stdout);
+      fputs ("\
   -E, --fatal-warnings         stop execution after first warning\n\
   -i, --interactive            unbuffer output, ignore interrupts\n\
   -P, --prefix-builtins        force a `m4_' prefix to all builtins\n\
   -Q, --quiet, --silent        suppress some warnings for builtins\n\
+      --warn-syntax            warn on syntax that will change in future\n\
 ", stdout);
 #ifdef ENABLE_CHANGEWORD
       fputs ("\
@@ -221,6 +227,7 @@
 {
   DEBUGFILE_OPTION = CHAR_MAX + 1,     /* no short opt */
   DIVERSIONS_OPTION,                   /* not quite -N, because of message */
+  WARN_SYNTAX_OPTION,                  /* no short opt */
 
   HELP_OPTION,                         /* no short opt */
   VERSION_OPTION                       /* no short opt */
@@ -250,6 +257,7 @@
 
   {"debugfile", required_argument, NULL, DEBUGFILE_OPTION},
   {"diversions", required_argument, NULL, DIVERSIONS_OPTION},
+  {"warn-syntax", no_argument, NULL, WARN_SYNTAX_OPTION},
 
   {"help", no_argument, NULL, HELP_OPTION},
   {"version", no_argument, NULL, VERSION_OPTION},
@@ -455,6 +463,10 @@
        debugfile = optarg;
        break;
 
+      case WARN_SYNTAX_OPTION:
+       warn_syntax = true;
+       break;
+
       case VERSION_OPTION:
        version_etc (stdout, PACKAGE, PACKAGE_NAME, VERSION, AUTHORS, NULL);
        exit (EXIT_SUCCESS);