From 82a8e2cece08fa0ca6aff9bdf62414731d384083 Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Thu, 2 Nov 2023 14:24:53 +0900
Subject: yat2m: Support Texinfo input -- and ---.

* doc/yat2m.c (proc_texi_buffer): Handle en-dash and em-dash.

--

GnuPG-bug-id: 6746
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
 doc/yat2m.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/doc/yat2m.c b/doc/yat2m.c
index f1bfbe5..ebddba8 100644
--- a/doc/yat2m.c
+++ b/doc/yat2m.c
@@ -1627,6 +1627,24 @@ proc_texi_buffer (FILE *fp, const char *line, size_t len,
         }
       else if (*s == '\\')
         writestr ("\\\\", "\\\\", fp);
+      else if (sect && *s == '-')
+        /* Handle -- and --- when it's _not_ in an argument.  */
+        {
+          if (len < 2 || s[1] != '-')
+            writechr (*s, fp);
+          else if (len < 3 || s[2] != '-')
+            {
+              writestr ("\\[en]", "&ndash;", fp);
+              len--;
+              s++;
+            }
+          else
+            {
+              writestr ("\\[em]", "&mdash;", fp);
+              len -= 2;
+              s += 2;
+            }
+        }
       else
         writechr (*s, fp);
     }
-- 
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