Improve documentation of 'seqp'

* doc/lispref/sequences.texi (Sequence Functions): Add text to
explain the relation between 'seqp' and 'sequencep'.  (Bug#32125)

diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi
index 327de6eb86a24a41138d4dc75af55fe4305c66b3..51d724cb1d8b8807c401ca4183f7c867c6fe56a1 100644 (file)
--- a/doc/lispref/sequences.texi
+++ b/doc/lispref/sequences.texi
@@ -63,7 +63,8 @@ But it is possible to add elements to the list, or remove elements.
 
 @defun sequencep object
 This function returns @code{t} if @var{object} is a list, vector,
-string, bool-vector, or char-table, @code{nil} otherwise.
+string, bool-vector, or char-table, @code{nil} otherwise.  See also
+@code{seqp} below.
 @end defun
 
 @defun length sequence
@@ -479,7 +480,8 @@ built-in sequence types, @code{seq-length} behaves like @code{length}.
 @defun seqp object
   This function returns non-@code{nil} if @var{object} is a sequence
 (a list or array), or any additional type of sequence defined via
-@file{seq.el} generic functions.
+@file{seq.el} generic functions.  This is an extensible variant of
+@code{sequencep}.
 
 @example
 @group