Commit 7b58c351 authored by Glenn Morris's avatar Glenn Morris
Browse files

(declare-function): Add optional fourth argument and document it.

parent 393209d6
......@@ -103,7 +103,7 @@ The return value of this function is not used."
(put ',name 'byte-optimizer 'byte-compile-inline-expand))))
(defmacro declare-function (fn file &optional arglist)
(defmacro declare-function (fn file &optional arglist fileonly)
"Tell the byte-compiler that function FN is defined, in FILE.
Optional ARGLIST is the argument list used by the function. The
FILE argument is not used by the byte-compiler, but by the
......@@ -120,6 +120,15 @@ declaration. A FILE with an \"ext:\" prefix is an external file.
`check-declare' will check such files if they are found, and skip
them without error if they are not.
FILEONLY non-nil means that `check-declare' will only check that
FILE exists, not that it defines FN. This is intended for
function-definitions that `check-declare' does not recognize, e.g.
To specify a value for FILEONLY without passing an argument list,
set ARGLIST to `t'. This is necessary because `nil' means an
empty argument list, rather than an unspecified one.
Note that for the purposes of `check-declare', this statement
must be the first non-whitespace on a line, and everything up to
the end of FILE must be all on the same line. For example:
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