Buggy WITH-TEXT-STYLE Macro??

• To: mf%sger.uucp@germany.eu.net, berni@iml.fhg.de, clim@BBN.COM
• Subject: Buggy WITH-TEXT-STYLE Macro??
• From: Mark Nahabedian <naha@riverside.scrc.symbolics.com>
• Date: Thu, 3 Dec 1992 14:23-0500
• In-Reply-To: <19921203140855.3.MF@FUJI-SAN.SGER.UUCP>

    Date: Thu, 3 Dec 1992 09:08 EST
    From: Markus Fischer <MF@sun4.sger>

	Date: Thu, 3 Dec 1992 08:25+0100
	From: berni@iml.fhg.de

	I'm using CLIM 1.1 with MCL 2.0
	and CLIM 1.1 under Genera 8.1.

	If I'm using a text style with :bold face inside an enviromnent of 
	:italic face, the text gets formatted in (:bold :italic) face.
	As all text-styles are fully specified, I assume it's a bug.
	If I misunderstand the Documentation and it's a feature, 
	how can I do what I want (i.e. formatting the
	text :bold, but NOT :italic??

    The problem is that WITH-TEXT-STYLE always merges the new text style with
    the existing one. The exact behavior is documented for the function 
    MERGE-TEXT-STYLES.

The question is about what should happen when a text style specifying
the face :bold is merged with a text style specifying the face :italic.
What berni expects is a text style with a face of :bold.  That is what I
would expect since the face of :bold that he asked for is fully
specified (i.e. not NIL).  That's what I would expect.  What he is
getting is a text face of (:bold :italic).

    However, you seem to want NO merging at all, since your test code
    always specifies the text-style completely. I wrote a kludge to get
    the behavior you're probably looking for. It temporarliy (for the extent
    of the body) binds the medium's text-style to the medium's default text
    style. 

    But maybe it would be desirable to have an additional keyword like
    (:MERGE-P T) in the WITH-TEXT-XXX macros of CLIM 2.0 ?



    (defmacro with-unmerged-text-style ((text-style stream) &body body)
      `(clim-utils:letf-globally (((medium-text-style ,stream) (medium-default-text-style ,stream)))
	 (with-text-style (,text-style ,stream)
	   ,@body)))

    Then your test case is as follows:

    (let ((stream *standard-output*))
      (clim:with-text-style  
	   ((clim:make-text-style :sans-serif :roman :large) stream)
	(format stream "~%Here is text with sans-serif normal large")
	(clim:with-text-style  
	   ((clim:make-text-style :sans-serif :italic :large) stream)
	  (format stream "~%Here is text with sans-serif italic large")
	  (WITH-UNMERGED-TEXT-STYLE
	       ((clim:make-text-style :sans-serif :bold :large) stream)
	    (format stream "~%This text is sans-serif, bold AND ITALIC, large,
    ")))))



0,,

• Buggy WITH-TEXT-STYLE Macro??
• From: "V. Ellen Golden" <ellen@stony-brook.scrc.symbolics.com>

• Buggy WITH-TEXT-STYLE Macro??
• From: Markus Fischer <MF@sun4.sger>

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