From: Humm <hummsmith42@gmail.com>
Date: Wed, 24 Nov 2021 19:56:44 +0000
Subject: [PATCH] troff: we are not htmlroff


If we don’t explicitly check for ‘h’ in troff, we can’t reliably check
for non-htmlroff well.

Consider the following:

	.if h \{\
	.	de M
	.		tm m
	..\}

Without this change, this will print m and not define macro M.
---
diff 24b9a78ceb63234ef0b0e7d1da0d46119b7a297d c2f89dc6c142284fc3b4c38a4e9fbf5c0c5b2a1d
--- a/sys/src/cmd/troff/n5.c	Wed Nov 24 15:41:36 2021
+++ b/sys/src/cmd/troff/n5.c	Wed Nov 24 20:56:44 2021
@@ -683,6 +683,7 @@
 		if (TROFF)
 			true++;
 		break;
+	case 'h':
 	case ' ':
 		break;
 	default: