[bug #60389] [PATCH] contrib/mm/m.tmac: omit a comma, if macro "let@sg_SP" is called with one argument

[Bjarni Ingi Gislason]

URL:
  <https://savannah.gnu.org/bugs/?60389>

                 Summary: [PATCH] contrib/mm/m.tmac: omit a comma, if macro
"let@sg_SP" is  called with one argument
                 Project: GNU troff
            Submitted by: bjarniig
            Submitted on: Tue 13 Apr 2021 11:03:32 PM UTC
                Category: Macro - mm
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

>From a9538e1a7089f243dfd5ca9da220577c4f8e5354 Mon Sep 17 00:00:00 2001
From: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Date: Tue, 13 Apr 2021 22:59:59 +0000
Subject: [PATCH] contrib/mm/m.tmac: omit a comma, if macro "let@sg_SP" is
 called with one argument

  This fixes a part of bug #60373, "and the writer's name at the
bottom is followed by a trailing comma."

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
---
 contrib/mm/m.tmac | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/contrib/mm/m.tmac b/contrib/mm/m.tmac
index bc9dcddf..40a5f6a4 100644
--- a/contrib/mm/m.tmac
+++ b/contrib/mm/m.tmac
@@ -3428,7 +3428,12 @@ in=\\n[.i] fi=\\n[.u] .d=\\n[.d] nl=\\n[nl] pg=\\n[%]
 .nf
 .if \\$3=1 .sp
 .sp
-.misc@toupper "\\$1, \\$2"
+.ie \\n[.$]=1 \{\
+.  misc@toupper "\\$1"
+.\}
+.el \{\
+.  misc@toupper "\\$1, \\$2"
+.\}
 .if \\$4 .sp
 .if \w'\\$5'&\\$4 \\$5
 .fi
-- 
2.30.2






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