bug when rendering table headers

[chris...@gmail.com]

At

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/jsMath

you'll see a traceback produced by WikklyText 1.6.0 when rendering the
content of the jsMath plugin.

You can see the raw text at:

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/jsMath.txt

A little bit of narrowing down suggests that it is table header
handling that's not happening. This page shows the error (small table
with header):

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/wikklerror
http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/wikklerror.txt

This page shows a table with no header:

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tablecells
http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tablecells.txt

This page show a table header being rendered as table cells, not
headers:

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tableheader
http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tableheader.txt

The trailing h, used to identify a header, is being treated as a(n
unclosed) table cell.

[Frank McIngvale]

On Mon, Nov 9, 2009 at 7:47 AM, cd...@peermore.com <chris...@gmail.com> wrote:

At

 http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/jsMath

you'll see a traceback produced by WikklyText 1.6.0 when rendering the
content of the jsMath plugin.

You can see the raw text at:

 http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/jsMath.txt

A little bit of narrowing down suggests that it is table header
handling that's not happening.

This page show a table header being rendered as table cells, not
headers:

http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tableheader
http://tiddlyweb.peermore.com/wiki/recipes/default/tiddlers/tableheader.txt

The trailing h, used to identify a header, is being treated as a(n
unclosed) table cell.

Ah ... okay, I don't think I knew about the trailing "h" case. Quick question before I try and fix this:

Is:
   |cellA|cellB|cellC|h

Equivalent to:
   |!cellA|!cellB|!cellC|

Or does the trailing "h" mean something else?

thanks
Frank
 

[FND]

> Is:
> |cellA|cellB|cellC|h
> Equivalent to:
> |!cellA|!cellB|!cellC|
> Or does the trailing "h" mean something else?

The former wraps the respective row in a THEAD element, whereas the
latter uses a TH element for the respective cell(s):

<table>
<thead>
<tr>
<td>cellA</td> <td>cellA</td> <td>cellA</td>
</tr>
</thead>
</table>

vs.

<table>
<tbody>
<tr>
<th>cellA</th> <th>cellA</th> <th>cellA</th>
</tr>
</tbody>
</table>

-- F.

[Frank McIngvale]

Ah OK. Hm, I need to check the HTML spec to understand the  semantic difference here -- just wondering if there's a way to fold one case into the other to simplify the backend?

thanks!
frank
 

-- F.

[FND]

> I need to check the HTML spec to understand the semantic difference here

This might be of use:
http://www.456bereastreet.com/archive/200410/bring_on_the_tables/

> just wondering if there's a way to fold one case into the other

I guess ignoring the THEAD issue and rendering "|foo|bar|h" as THs
instead should be fine.

-- F.

[Frank McIngvale]

On Mon, Nov 9, 2009 at 1:42 PM, FND <FN...@gmx.net> wrote:

> I need to check the HTML spec to understand the semantic difference here

This might be of use:
    http://www.456bereastreet.com/archive/200410/bring_on_the_tables/

Good info, thanks.
 

> just wondering if there's a way to fold one case into the other

I guess ignoring the THEAD issue and rendering "|foo|bar|h" as THs
instead should be fine.

I will probably do that since its a lot easier to change a flag in the individual table cell as it's being build vs. walking back up the tree and changing the whole row. I just checked and TiddlyWiki DOES make the THEAD when |h is used, and TH when not, so I'll make a TODO on emulating the TiddlyWiki behavior eventually in case it matters for someone.

thanks,
Frank

-- F.