From 69249e8313fb8853c5c162dd16b927099e25bb15 Mon Sep 17 00:00:00 2001
From: Humm <hummsmith42@gmail.com>
Date: Wed, 24 Nov 2021 19:56:44 +0000
Subject: [PATCH] troff: we are not htmlroff
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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.
---
 sys/src/cmd/troff/n5.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/src/cmd/troff/n5.c b/sys/src/cmd/troff/n5.c
index a1edaf5d5..4f0eed93f 100644
--- a/sys/src/cmd/troff/n5.c
+++ b/sys/src/cmd/troff/n5.c
@@ -683,6 +683,7 @@ void caseif1(int x)
 		if (TROFF)
 			true++;
 		break;
+	case 'h':
 	case ' ':
 		break;
 	default: