; Improve a doc string in etags.el

* lisp/progmodes/etags.el (tags-complete-tags-table-file):
Improve the doc string.  (Bug#37538)

diff --git a/lisp/progmodes/etags.el b/lisp/progmodes/etags.el
index 6784894ba87e033fc788ba71b6e4e4c81776e718..26590d8ffebcd17eadd78ffe91d056c0a1c4e5aa 100644 (file)
--- a/lisp/progmodes/etags.el
+++ b/lisp/progmodes/etags.el
@@ -1851,10 +1851,15 @@ For non-interactive use, superceded by `fileloop-initialize-replace'."
 
 (defun tags-complete-tags-table-file (string predicate what)
   "Complete STRING from file names in the current tags table.
-The meaning of the arguments are the same as the function form of
-COLLECTION as explained in Info node `(elisp) Programmed
-Completion', except that if WHAT does not equal t, it is treated
-as if it were nil."
+PREDICATE, if non-nil, is a function to filter possible matches:
+if it returns nil, the match is ignored.  If PREDICATE is nil,
+every possible match is acceptable.
+WHAT is a flag specifying the type of completion: t means `all-completions'
+operation, any other value means `try-completions' operation.
+
+This function serves as COLLECTION argument to `completing-read',
+see the Info node `(elisp) Programmed Completion' for more detailed
+description of the arguments."
   (save-excursion
     ;; If we need to ask for the tag table, allow that.
     (let ((enable-recursive-minibuffers t))