`format-spec' fails to pass on text properties

`format-spec' fails to pass on text properties

[Daniel Brockman]

This works as expected:

ELISP> (format #("<%s>" 0 4 (face (:weight bold))) "foo")
#("<foo>" 0 5
  (face
   (:weight bold)))

This, however, does not:

ELISP> (format-spec #("<%x>" 0 4 (face (:weight bold))) '((?x . "foo")))
#("<foo>" 0 1
  (face
   (:weight bold))
  1 4 nil 4 5
  (face
   (:weight bold)))

Is this a bug that should be fixed?

-- 
Daniel Brockman <daniel@brockman.se>

Re: `format-spec' fails to pass on text properties

[Daniel Brockman]

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Here's a fix that seems to work, but I'm not very experienced in
hacking Elisp so I'm probably doing something stupid.


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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*** emacs/lisp/gnus/format-spec.el~	2003-09-01 17:45:23.000000000 +0200
--- emacs/lisp/gnus/format-spec.el	2005-05-13 17:48:07.438183352 +0200
***************
*** 45,54 ****
  	(let* ((num (match-string 1))
  	       (spec (string-to-char (match-string 2)))
  	       (val (cdr (assq spec specification))))
- 	  (delete-region (1- (match-beginning 0)) (match-end 0))
  	  (unless val
  	    (error "Invalid format character: %s" spec))
! 	  (insert (format (concat "%" num "s") val))))
         ;; Signal an error on bogus format strings.
         (t
  	(error "Invalid format string"))))
--- 45,59 ----
  	(let* ((num (match-string 1))
  	       (spec (string-to-char (match-string 2)))
  	       (val (cdr (assq spec specification))))
  	  (unless val
  	    (error "Invalid format character: %s" spec))
!           (let ((text (format (concat "%" num "s") val)))
!             (insert-and-inherit text)
!             ;; Delete the specifier body.
!             (delete-region (+ (match-beginning 0) (length text))
!                            (+ (match-end 0) (length text)))
!             ;; Delete the percent sign.
!             (delete-region (1- (match-beginning 0)) (match-beginning 0)))))
         ;; Signal an error on bogus format strings.
         (t
  	(error "Invalid format string"))))

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-- 
Daniel Brockman <daniel@brockman.se>

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Re: `format-spec' fails to pass on text properties

[Daniel Brockman]

I'm sorry, ignore this message.  I just want to see if it gets
through Gmane.

Re: `format-spec' fails to pass on text properties

[Richard Stallman]

Your patch looks good to me.  Thanks.

It is small enough to be a "tiny change".
Would someone please install it?