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(c-electric-delete, c-electric-delete-forward): Split `c-electric-delete'

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into two functions where `c-electric-delete-forward' always deletes
forward and `c-electric-delete' only contains the code
necessary for XEmacs to choose between backward and forward
deletion.  `c-electric-delete-forward' is now bound to C-d to
get the electric behavior on that key too.

(c-fill-paragraph): Fixed bogus direct use of c-comment-prefix-regexp,
which caused an error when it's a list.
This commit is contained in:
Eli Zaretskii 2001-05-04 09:57:35 +00:00
parent 716d48edd4
commit fdea67e752
1 changed files with 35 additions and 34 deletions
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69
lisp/progmodes/cc-cmds.el
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@ -105,22 +105,13 @@ See `c-toggle-auto-state' and `c-toggle-hungry-state' for details."
;; Electric keys
;; Note: In XEmacs 20.3 the Delete and BackSpace keysyms have been
;; separated and "\177" is no longer an alias for both keys. Also,
;; the variable delete-key-deletes-forward controls in which direction
;; the Delete keysym deletes characters. The functions
;; c-electric-delete and c-electric-backspace attempt to deal with
;; this new functionality. For Emacs 19 and XEmacs 19 backwards
;; compatibility, the old behavior has moved to c-electric-backspace
;; and c-backspace-function.
(defun c-electric-backspace (arg)
"Deletes preceding character or whitespace.
If `c-hungry-delete-key' is non-nil, as evidenced by the \"/h\" or
\"/ah\" string on the mode line, then all preceding whitespace is
consumed. If however an ARG is supplied, or `c-hungry-delete-key' is
nil, or point is inside a literal then the function in the variable
`c-backspace-function' is called.
consumed. If however a prefix argument is supplied, or
`c-hungry-delete-key' is nil, or point is inside a literal then the
function in the variable `c-backspace-function' is called.
See also \\[c-electric-delete]."
(interactive "*P")
@ -135,36 +126,46 @@ See also \\[c-electric-delete]."
(funcall c-backspace-function 1)
))))
(defun c-electric-delete-forward (arg)
"Deletes following character or whitespace.
If `c-hungry-delete-key' is non-nil, as evidenced by the \"/h\" or
\"/ah\" string on the mode line, then all following whitespace is
consumed. If however a prefix argument is supplied, or
`c-hungry-delete-key' is nil, or point is inside a literal then the
function in the variable `c-delete-function' is called."
(interactive "*P")
(if (or (not c-hungry-delete-key)
arg
(c-in-literal))
(funcall c-delete-function (prefix-numeric-value arg))
(let ((here (point)))
(skip-chars-forward " \t\n")
(if (/= (point) here)
(delete-region (point) here)
(funcall c-delete-function 1)))))
(defun c-electric-delete (arg)
"Deletes preceding or following character or whitespace.
This function either deletes forward as `c-electric-delete-forward' or
backward as `c-electric-backspace', depending on the configuration:
The behavior of this function depends on the variable
`delete-key-deletes-forward'. If this variable is nil (or does not
exist, as in older Emacsen), then this function behaves identical to
\\[c-electric-backspace].
If the function `delete-forward-p' is defined (XEmacs 21) and returns
non-nil, it deletes forward. Else, if the variable
`delete-key-deletes-forward' is defined (XEmacs 20) and is set to
non-nil, it deletes forward. Otherwise it deletes backward.
If `delete-key-deletes-forward' is non-nil and is supported in your
Emacs, then deletion occurs in the forward direction. So if
`c-hungry-delete-key' is non-nil, as evidenced by the \"/h\" or
\"/ah\" string on the mode line, then all following whitespace is
consumed. If however an ARG is supplied, or `c-hungry-delete-key' is
nil, or point is inside a literal then the function in the variable
`c-delete-function' is called."
Note: This is the way in XEmacs 20 and later to choose the correct
action for the [delete] key, whichever key that means. In other
flavors this function isn't used, instead it's left to the user to
bind [delete] to either \\[c-electric-delete-forward] or \\[c-electric-backspace] as appropriate
\(the keymap `function-key-map' is useful for that). Emacs 21 handles
that automatically, though."
(interactive "*P")
(if (or (and (fboundp 'delete-forward-p) ;XEmacs 21
(delete-forward-p))
(and (boundp 'delete-key-deletes-forward) ;XEmacs 20
delete-key-deletes-forward))
(if (or (not c-hungry-delete-key)
arg
(c-in-literal))
(funcall c-delete-function (prefix-numeric-value arg))
(let ((here (point)))
(skip-chars-forward " \t\n")
(if (/= (point) here)
(delete-region (point) here)
(funcall c-delete-function 1))))
;; act just like c-electric-backspace
(c-electric-delete-forward arg)
(c-electric-backspace arg)))
(defun c-electric-pound (arg)
@ -2285,7 +2286,7 @@ Warning: Regexp from `c-comment-prefix-regexp' doesn't match the comment prefix
(save-excursion
(goto-char (car lit-limits))
(if (looking-at (if (eq lit-type 'c++)
c-comment-prefix-regexp
c-current-comment-prefix
comment-start-skip))
(goto-char (match-end 0))
(forward-char 2)