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master 3848e27: Improve the documentation of a recent change
From: |
Eli Zaretskii |
Subject: |
master 3848e27: Improve the documentation of a recent change |
Date: |
Fri, 17 Sep 2021 08:04:54 -0400 (EDT) |
branch: master
commit 3848e2727edab4a2bcb6bca52abae883e33ac90b
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>
Improve the documentation of a recent change
* etc/NEWS:
* doc/lispref/sequences.texi (Sequence Functions): Improve
documentation of 'seq-union'.
---
doc/lispref/sequences.texi | 8 +++++---
etc/NEWS | 3 ++-
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi
index 53d3719..4a48d62 100644
--- a/doc/lispref/sequences.texi
+++ b/doc/lispref/sequences.texi
@@ -957,9 +957,11 @@ contain less elements than @var{n}. @var{n} must be an
integer. If
@cindex sequences, union of
@cindex union of sequences
This function returns a list of the elements that appear either in
-@var{sequence1} or @var{sequence2}. If the optional argument
-@var{function} is non-@code{nil}, it is a function of two arguments to
-use to compare elements instead of the default @code{equal}.
+@var{sequence1} or @var{sequence2}. The elements of the returned list
+are all unique, in the sense that no two elements there will compare
+equal. If the optional argument @var{function} is non-@code{nil}, it
+should be a function of two arguments to use to compare elements,
+instead of the default @code{equal}.
@example
@group
diff --git a/etc/NEWS b/etc/NEWS
index b1ad4dd..b10aa3b 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -3858,7 +3858,8 @@ supporting Lisp files when 'require' is unsuitable.
+++
** New function 'seq-union'.
This function takes two sequences and returns a list of all elements
-that appear in either of them.
+that appear in either of them, with no two elements that compare equal
+appearing in the result.
+++
** New function 'syntax-class-to-char'.
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