[groff] 05/05: eqn(1): Remove some bad advice.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit d4c6563b7c6d7f0ffed70c5d856921373c26daae
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Wed May 31 16:18:31 2023 -0500

    eqn(1): Remove some bad advice.
    
    ...dating back to commit 62248e78a3, 2007-02-06.  "cdot cdot cdot" is
    not equivalent to "cdots" because the two input sequences have different
    spacing types.  `cdot` is spaced like a binary operator (which it often
    is, as in the dot product), and `cdots`, being an ellipsis on the math
    axis, uses the "inner" spacing type.
    
    Also refer to an ellipsis on the text baseline in those terms.
---
 src/preproc/eqn/eqn.1.man | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/preproc/eqn/eqn.1.man b/src/preproc/eqn/eqn.1.man
index 5d0c37d1f..4c9b0aaeb 100644
--- a/src/preproc/eqn/eqn.1.man
+++ b/src/preproc/eqn/eqn.1.man
@@ -214,16 +214,12 @@ GNU
 .I eqn
 sets the input token
 .RB \[lq] .\|.\|.\& \[rq]
-as three periods or low dots,
-rather than the three centered dots of
-AT&T
+as an ellipsis on the text baseline,
+not the three centered dots of AT&T
 .IR eqn . \" AT&T
 .
-To get three centered dots,
-write
-.B cdots
-or
-.RB \[lq] "cdot cdot cdot" \[rq].
+Set an ellipsis on the math axis with the GNU extension macro
+.BR cdots .
 .
 .
 .\" ====================================================================