From: Nick Bowler <nbowler@draconx.ca>
Date: Thu, 7 Dec 2023 02:35:26 +0000 (-0500)
Subject: cdecl99: Better "help" output on some old systems.
X-Git-Tag: v1.3~61
X-Git-Url: https://git.draconx.ca/gitweb/cdecl99.git/commitdiff_plain/a4355b10f7738d5b8438f03fa193a710b765d8e0

cdecl99: Better "help" output on some old systems.

Some very old printf implementations return 0 on success instead of the
number of bytes written.  We should never see a return of 0 normally,
so we can improve the output to be less of a garbled mess by printing
a newline if that happens (same as the error case).  This is a simple
tweak that should have virtually no impact on modern systems.
---

diff --git a/src/execute.gperf b/src/execute.gperf
index bf9a080..a45413d 100644
--- a/src/execute.gperf
+++ b/src/execute.gperf
@@ -1,6 +1,6 @@
 %{
 /*
- * Copyright © 2021 Nick Bowler
+ * Copyright © 2021, 2023 Nick Bowler
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -72,7 +72,7 @@ static int run_cmd_help(void)
 		int w;
 
 		w = printf("  %s", stringpool+c->name);
-		if (w < 0 || w > 13) {
+		if (w <= 0 || w > 13) {
 			putchar('\n');
 			w = 0;
 		}