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| author | Eli Zaretskii <eliz@gnu.org> | 2021-08-18 22:07:30 +0300 |
|---|---|---|
| committer | Eli Zaretskii <eliz@gnu.org> | 2021-08-18 22:07:30 +0300 |
| commit | 78b427648b85d0f7e93ad5f18537ad9f2da055cb (patch) | |
| tree | 9b7f8f95c185da0b1c1d009a3c92145ec32a6014 /src | |
| parent | 91f549becd03b1598b9d8b233f6058ba027f0a84 (diff) | |
| download | emacs-78b427648b85d0f7e93ad5f18537ad9f2da055cb.tar.gz emacs-78b427648b85d0f7e93ad5f18537ad9f2da055cb.tar.bz2 emacs-78b427648b85d0f7e93ad5f18537ad9f2da055cb.zip | |
Improve documentation of 'assoc'
* doc/lispref/lists.texi (Association Lists):
* src/fns.c (Fassoc): Document how TESTFN is called. (Bug#50110)
Diffstat (limited to 'src')
| -rw-r--r-- | src/fns.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/fns.c b/src/fns.c index 932800a3a49..5126439fd66 100644 --- a/src/fns.c +++ b/src/fns.c @@ -1755,7 +1755,8 @@ DEFUN ("assoc", Fassoc, Sassoc, 2, 3, 0, doc: /* Return non-nil if KEY is equal to the car of an element of ALIST. The value is actually the first element of ALIST whose car equals KEY. -Equality is defined by TESTFN if non-nil or by `equal' if nil. */) +Equality is defined by the function TESTFN, defaulting to `equal'. +TESTFN is called with 2 arguments: a car of an alist element and KEY. */) (Lisp_Object key, Lisp_Object alist, Lisp_Object testfn) { if (eq_comparable_value (key) && NILP (testfn)) |