From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 25 Dec 2021 19:26:32 +0000 (-0800)
Subject: mingle: convert usage text to a const char array
X-Git-Tag: 3.0.0~95^2~12
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d3b9b22139e4751e9210101e87737a8d8f469cfd;p=graphviz

mingle: convert usage text to a const char array

This makes the intent of the code slightly clearer, but also pre-emptively
avoids an upcoming -Wwrite-strings warning when converting this code to C++.

Related to #2154.
---

diff --git a/cmd/mingle/minglemain.c b/cmd/mingle/minglemain.c
index 75ce86005..4208425ce 100644
--- a/cmd/mingle/minglemain.c
+++ b/cmd/mingle/minglemain.c
@@ -60,7 +60,7 @@ static FILE *openFile(const char *name, const char* cmd)
 	return (fp);
 }
 
-static char* use_msg =
+static const char use_msg[] =
 "Usage: mingle <options> <file>\n\
     -a t - max. turning angle [0-180] (40)\n\
     -c i - compatability measure; 0 : distance, 1: full (default)\n\