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Improve previous bytecomp fix

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* lisp/emacs-lisp/bytecomp.el (byte-compile-char-before)
(byte-compile-backward-char, byte-compile-backward-word):
Improve previous change, to handle non-explicit nil.
This commit is contained in:
Glenn Morris 2013-06-07 18:35:47 -07:00
parent 650645d50f
commit 467f3b337c
2 changed files with 12 additions and 3 deletions
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9
lisp/emacs-lisp/bytecomp.el
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@ -3446,6 +3446,7 @@ discarding."
(byte-defop-compiler (/ byte-quo) byte-compile-quo)
(byte-defop-compiler nconc)
;; Is this worth it? Both -before and -after are written in C.
(defun byte-compile-char-before (form)
(cond ((or (= 1 (length form))
(and (= 2 (length form)) (not (nth 1 form))))
@ -3453,10 +3454,12 @@ discarding."
((= 2 (length form))
(byte-compile-form (list 'char-after (if (numberp (nth 1 form))
(1- (nth 1 form))
`(1- ,(nth 1 form))))))
`(1- (or ,(nth 1 form)
(point)))))))
(t (byte-compile-subr-wrong-args form "0-1"))))
;; backward-... ==> forward-... with negated argument.
;; Is this worth it? Both -backward and -forward are written in C.
(defun byte-compile-backward-char (form)
(cond ((or (= 1 (length form))
(and (= 2 (length form)) (not (nth 1 form))))
@ -3464,7 +3467,7 @@ discarding."
((= 2 (length form))
(byte-compile-form (list 'forward-char (if (numberp (nth 1 form))
(- (nth 1 form))
`(- ,(nth 1 form))))))
`(- (or ,(nth 1 form) 1))))))
(t (byte-compile-subr-wrong-args form "0-1"))))
(defun byte-compile-backward-word (form)
@ -3474,7 +3477,7 @@ discarding."
((= 2 (length form))
(byte-compile-form (list 'forward-word (if (numberp (nth 1 form))
(- (nth 1 form))
`(- ,(nth 1 form))))))
`(- (or ,(nth 1 form) 1))))))
(t (byte-compile-subr-wrong-args form "0-1"))))
(defun byte-compile-list (form)