Bold fonts do the mambo

This is an animated GIF showing the dancing effect while typing just one character, note the change to the rendering of the already-typed characters.

The same graphics as the Animated GIF, but arranged vertically in case someone doesn't like gifs.

Assign to DESKTOP SWAT TEAM.

Also confirm, as Treenaks has confirmed it happens to him too and it's not just me going mad.

For me it happens in whole columns at once.

So if I have a high window, the entire column of bold text (usually the ENTIRE part that's left of and below the cursor) does the mambo when I move the cursor.

I can see this easily using vim in a perl file (the Perl syntax file in vim uses bold a lot, it seems)

Mandriva has a bug about that: http://qa.mandriva.com/show_bug.cgi?id=13910

How convenient. This has been on my list (http://sucs.org/~sits/test/ubuntu-bugs.txt ) to report to Ubuntu for a while and now I don't have to copy it here. It's a pity the Mandriva folks could never confirm it though...

discussion upstream about that:

"It's not Pango, not FreeType. Plain vte bug. Here are the details:

vtexft doesn't know about bold faces. When it wants to draw something in bold,
it redraws it again shifted one pixel to the right. Of course that means it
may be overlapping the next box, which it is in the example.

Now following the example here, if the chars 'mp' are redrawn together, you see
them overlapping, but when later the 'p' is redrawn only, it clears its box and
draws a p, which means the part of m overlappint p's box is cleared...

Not sure how to fix this. Widening the boxes by one pixel is not that
appealing.
...
> why is the "p" redraw when you enter the "h"?
...
Heh, *just in case*. Because ph may be a wide character. So instead of
checking whether it needs t redraw p, it simply does that all the time. It's
one of the things I'm working on currently in vte: to remove excess redraws.
But that doesn't really solve the entire problem. It will still show up in
other situations."

Another me too. I am using Ubuntu Dapper and I can see it even without bold, using Monospace 8 font.

Bump.... I see it not with just bold, effecting whole columns, and its really annoying, since I like 8 monospace.

Fixed in upstream SVN.

Should be fixed with vte 0.15.3.