From: Emden R. Gansner <erg@research.att.com>
Date: Fri, 12 Jul 2013 17:20:02 +0000 (-0400)
Subject: Fix bug 2306.
X-Git-Tag: LAST_LIBGRAPH~32^2~138
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3febbc2d2a6ff93bb88c59b17464446e8a165a1c;p=graphviz

Fix bug 2306.
---

diff --git a/contrib/prune/prune.1 b/contrib/prune/prune.1
index fb7cb6edf..aba40be3f 100644
--- a/contrib/prune/prune.1
+++ b/contrib/prune/prune.1
@@ -20,6 +20,12 @@ prune \- Prune directed graphs
 .BI \-N " attrspec"
 ]
 [
+.B \-v
+]
+[
+.BR \- ( h | ? )
+]
+[
 .I files ...
 ]
 .SH DESCRIPTION
@@ -54,7 +60,12 @@ pruned node.
 .I attrspec
 is a string of the form
 .IR attr "=" value.
-
+.TP
+.B \-v
+Verbose output.
+.TP
+.BR \-h " "\-?
+Prints the usage and exits.
 .SH EXAMPLES
 An input graph
 .I test.gv
diff --git a/contrib/prune/prune.c b/contrib/prune/prune.c
index d885577a3..89d615dcb 100644
--- a/contrib/prune/prune.c
+++ b/contrib/prune/prune.c
@@ -128,7 +128,10 @@ int main(int argc, char **argv)
 		break;
 	    }
 	case '?':
-	    if (isprint(optopt)) {
+	    if (optopt == '?') {
+		help_message(progname);
+		exit(EXIT_SUCCESS);
+	    } else if (isprint(optopt)) {
 		fprintf(stderr, "Unknown option `-%c'.\n", optopt);
 	    } else {
 		fprintf(stderr, "Unknown option character `\\x%X'.\n",
@@ -253,6 +256,8 @@ Usage: %s [options] [<files>]\n\
 \n\
 Options:\n\
   -h :           Print this message\n\
+  -? :           Print this message\n\
+  -v :           Verbose\n\
   -n<node> :     Name node to prune.\n\
   -N<attrspec> : Attribute specification to apply to pruned nodes\n\
 \n\