* bug#52197: [PATCH] Format and index concept 'predicate' in ELisp Intro
@ 2021-11-30 10:20 Y. E. via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-11-30 13:03 ` Lars Ingebrigtsen
0 siblings, 1 reply; 2+ messages in thread
From: Y. E. via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-11-30 10:20 UTC (permalink / raw)
To: 52197
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Tags: patch
As the subject claims, the patch suggests improving representation of
the concept 'predicate' in Emacs Lisp Introduction.
As far as I can tell, this is the only place among Emacs bundled
manuals that introduce the concept.
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From a097c026d9e894679cbb248c8ce5edfb6036e0e5 Mon Sep 17 00:00:00 2001
From: YugaEgo <yet@ego.team>
Date: Tue, 30 Nov 2021 12:02:39 +0200
Subject: [PATCH] Format and index concept 'predicate' in ELisp Intro
* doc/lispintro/emacs-lisp-intro.texi (Wrong Type of Argument):
Add index and format definition.
---
doc/lispintro/emacs-lisp-intro.texi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/doc/lispintro/emacs-lisp-intro.texi b/doc/lispintro/emacs-lisp-intro.texi
index 6ddc3bfb5c..9f1f10e8d6 100644
--- a/doc/lispintro/emacs-lisp-intro.texi
+++ b/doc/lispintro/emacs-lisp-intro.texi
@@ -2146,9 +2146,10 @@ Wrong Type of Argument
of the buffer.) In Emacs Lisp, @code{+} can be used to add the
numeric value of marker positions as numbers.
+@cindex @samp{predicate} defined
The @samp{p} of @code{number-or-marker-p} is the embodiment of a
practice started in the early days of Lisp programming. The @samp{p}
-stands for ``predicate''. In the jargon used by the early Lisp
+stands for @dfn{predicate}. In the jargon used by the early Lisp
researchers, a predicate refers to a function to determine whether some
property is true or false. So the @samp{p} tells us that
@code{number-or-marker-p} is the name of a function that determines
--
2.30.0
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2021-11-30 10:20 bug#52197: [PATCH] Format and index concept 'predicate' in ELisp Intro Y. E. via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-11-30 13:03 ` Lars Ingebrigtsen
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