Github/emacs
2
0
Fork 1
mirror of git://git.sv.gnu.org/emacs.git synced 2026-02-16 17:24:23 +00:00
Code Issues Projects Releases Packages Wiki Activity

Clarify the TESTFN argument to `alist-get'

Browse source 
* lisp/subr.el (alist-get):
Rephrase the initial text to clarify the meaning of the TESTFN argument.
It's an equality predicate, not a look-up function (Bug#35206).
This commit is contained in:
Mattias Engdegård 2019-04-09 16:56:37 +02:00
parent 44b306d351
commit c81465580f
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
lisp/subr.el
View file

@ -779,9 +779,9 @@ Elements of ALIST that are not conses are ignored."
alist)
(defun alist-get (key alist &optional default remove testfn)
"Return the value associated with KEY in ALIST.
"Find the first element of ALIST whose `car' equals KEY and return its `cdr'.
If KEY is not found in ALIST, return DEFAULT.
Use TESTFN to lookup in the alist if non-nil. Otherwise, use `assq'.
Equality with KEY is tested by TESTFN, defaulting to `eq'.
You can use `alist-get' in PLACE expressions. This will modify
an existing association (more precisely, the first one if