From 4e1662b43006a43f0dd0dc619a3151607d95277e Mon Sep 17 00:00:00 2001
From: wlemb <wlemb>
Date: Thu, 17 May 2001 10:56:21 +0000
Subject: * src/roff/troff/input.cc (read_size): Fix special case `s0'.

---
 ChangeLog               | 4 ++++
 src/roff/troff/input.cc | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 19c21601..07cf9ca2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2001-05-17  Jeffrey Friedl  <jfriedl@yahoo-inc.com>
+
+	* src/roff/troff/input.cc (read_size): Fix special case `\s0'.
+
 2001-05-16  Bruce Lilly  <blilly@erols.com>
 
 	* contrib/mm/m.tmac (TH): Fix incorrect error message.
diff --git a/src/roff/troff/input.cc b/src/roff/troff/input.cc
index 366d77fd..d0f86328 100644
--- a/src/roff/troff/input.cc
+++ b/src/roff/troff/input.cc
@@ -3964,6 +3964,11 @@ static int read_size(int *x)
     }
   }
   else if (csdigit(c)) {
+    if (!inc && c == '0') {
+      // special case -- \s0 means to revert to previous size.
+      *x = 0;
+      return 1;
+    }
     val = c - '0';
     if (!inc && c != '0' && c < '4') {
       tok.next();
-- 
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