This patch is mostly from the debian indent_2.2.9-6.diff.

Also added a patch to check usage of `texinfo2man`.
http://bugs.gentoo.org/show_bug.cgi?id=71690

--- indent-2.2.9.orig/man/texinfo2man.c
+++ indent-2.2.9/man/texinfo2man.c
@@ -2,6 +2,7 @@
 #include <malloc.h>
 #include <string.h>
 #include <ctype.h>
+#include <stdlib.h>
 
 /* texinfo2man.
  * Convert a texinfo document to man format.
@@ -162,7 +163,7 @@
 
 static char value_updated[64], value_edition[64], value_version[64];
 
-process_texi (FILE * in)
+void process_texi (FILE * in)
 {
   char buf[1024];
   int in_block = 0;
@@ -252,6 +254,12 @@
     char buf[1024];
     int line_no = 0;
 
+	if (argc != 3) {
+		fprintf(stderr, "Usage: %s <man template> <info file>\n", argv[0]);
+		fprintf(stderr, "  The man page will be written to stdout.\n");
+		return -1;
+	}
+
     texinfoname = argv[2];
 
     in = fopen (argv[2], "r");
--- indent-2.2.9.orig/src/output.c
+++ indent-2.2.9/src/output.c
@@ -13,8 +13,10 @@
 
 #include <stdio.h>
 #include <sys/types.h>
+#include <time.h>
 #include <utime.h>
 #include <sys/stat.h>
+#include <stdlib.h>
 
 #include "indent.h"
 #include "sys.h"
@@ -1206,7 +1208,7 @@
     }
 }
 
-extern inhibit_indenting(
+extern void inhibit_indenting(
     BOOLEAN flag)
 {
     inhibited = flag;
--- indent-2.2.9.orig/src/indent.h
+++ indent-2.2.9/src/indent.h
@@ -96,8 +96,6 @@
 /* Size of the input program, not including the ' \n\0' we add at the end */
 extern unsigned long in_prog_size;
 
-/* The output file. */
-extern FILE *output;
 
 
 
--- indent-2.2.9.orig/src/indent.c
+++ indent-2.2.9/src/indent.c
@@ -875,6 +875,7 @@
                                                  * imply we are in a stmt */
         for (t_ptr = s_code; *t_ptr; ++t_ptr)
         {
+            check_lab_size();
             *e_lab++ = *t_ptr;  /* turn everything so far into a label */
         }
                 
@@ -3062,8 +3063,8 @@
     BOOLEAN using_stdin = false;
     exit_values_ty exit_status;
 
-#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
-    setlocale (LC_MESSAGES, "");
+#if defined (HAVE_SETLOCALE)
+    setlocale (LC_ALL, "");
 #endif
     bindtextdomain (PACKAGE, LOCALEDIR);
     textdomain (PACKAGE);
--- indent-2.2.9.orig/src/comments.c
+++ indent-2.2.9/src/comments.c
@@ -20,6 +20,7 @@
 #include "comments.h"
 #include "globs.h"
 #include "parse.h"
+#include "output.h"
 
 RCSTAG_CC ("$Id: 2.2.9-deb-gentoo.patch,v 1.1 2007-05-08 19:48:32 niro Exp $");
 
--- indent-2.2.9.orig/src/output.h
+++ indent-2.2.9/src/output.h
@@ -47,7 +47,7 @@
     struct stat * file_stats,
      const char  * filename);
 
-extern inhibit_indenting(
+extern void inhibit_indenting(
     BOOLEAN flag);