Re: [xsl] "--" question

["B. Tommie Usdin" <btusdin@xxxxxxxxxxxxxxxx>]

At 3:45 PM -0600 4/7/03, Mike Brown wrote:
>XML, like HTML, is a restricted subset of SGML.
>I am guessing that in SGML a bare "--" can be considered markup.

Exactly!  In SGML comments are allowed in a lot of places where they
are not in XML, and the comment delimiter is "--".

For example, the following is legal in SGML DTDs:

<!ATTLIST entry
            -- column name --
        colname         NMTOKEN                                 #IMPLIED
            -- name of starting column for horiz spanning entries --
        namest          NMTOKEN                                 #IMPLIED
            -- name of ending column for horiz spanning entries --
        nameend         NMTOKEN                                 #IMPLIED
            -- number of rows for vert spanning entries --
        morerows        NUMBER                                  #IMPLIED
            -- column separator 0=no --
        colsep          %yesorno;                               #IMPLIED
            -- row separator 0=no --
        rowsep          %yesorno;                               #IMPLIED
            -- alignment of contents --
        align           (left|right|center|justify|char)        #IMPLIED
            -- if align is char, what char to align on --
        char            CDATA                                   #IMPLIED
            -- character offset --
        charoff         NUTOKEN                                 #IMPLIED
            -- vertical alignment --
        valign          (top|middle|bottom)                     #IMPLIED
        %tbl.entry.att;                                                 >

and so is:

<!ENTITY %	ade.ph	"str|cty|sbd|cny|pc|san|ead" -- address elements --	>
<!ENTITY %	bib	"au|cau|msn|srt|loc|pdt|pp|atl|sct|obi"	-- bibliographic --	>
<!ENTITY %	bmcps.d	"ack|bib|vt"	-- back matter cps elements --	>
<!ENTITY %	fmcps.d	"ded|abs|smtl"	-- front matter cps elements --	>
<!ENTITY %	fmsec.d	"fwd|pf"		-- front matter sections --	>
<!ENTITY %	pub	"cgs|cgn|crt|rps|avl"	-- pubfm elements --	>
<!ENTITY %	pub.ph	"phi|prc|ext|cdn|aon|aid|issn"	>


The comments begin with "--" and end with "--". So, "--" is not
allowed in comments!

-- Tommie
-- 
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B. Tommie Usdin                        mailto:btusdin@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com   
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