[groff] 04/04: man/groff.7.man: Fix style nits.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 678bc6de3f8f06304060f659adb475b53b8751dd
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Thu Jul 16 22:14:28 2020 +1000

    man/groff.7.man: Fix style nits.
    
    Document arguments after the first to .as, .as1, .ds, and .ds1 as
    optional, inspired by Dave Kemper's report in Savannah #58746.  Describe
    what happens when they are omitted.
---
 man/groff.7.man | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/man/groff.7.man b/man/groff.7.man
index 48c644b..df80041 100644
--- a/man/groff.7.man
+++ b/man/groff.7.man
@@ -1261,18 +1261,23 @@ Same as
 but with compatibility mode switched off during macro expansion.
 .
 .TPx
-.REQ .as "stringvar anything"
+.REQ .as "stringvar \fR[\fPanything\fR]\fP"
 Append
 .I anything
 to
-.IR stringvar .
+.IR stringvar ;
+no operation if
+.I stringvar
+is omitted.
+.
 .
 .TPx
-.REQ .as1 "stringvar anything"
+.REQ .as1 "stringvar \fR[\fPanything\fR]\fP"
 Same as
 .request .as
 but with compatibility mode switched off during string expansion.
 .
+.
 .TPx
 .REQ .asciify "diversion"
 Unformat ASCII characters, spaces, and some escape sequences in
@@ -1614,14 +1619,18 @@ of
 is interpreted.
 .
 .TPx
-.REQ .ds "stringvar anything"
+.REQ .ds "stringvar \fR[\fPanything\fR]\fP"
 Set
 .I stringvar
 to
-.IR anything .
+.IR anything ,
+or to the empty string if
+.I anything
+is omitted.
+.
 .
 .TPx
-.REQ .ds1 "stringvar anything"
+.REQ .ds1 "stringvar \fR[\fPanything\fR]\fP"
 Same as
 .request .ds
 but with compatibility mode switched off during string expansion.