[Pkg-fonts-devel] Bug#680582: Bug#680582: Combining diacritics out of place

[Vasudev Kamath]

Hi Vincent,
[Removed pkg-fonts from CC to avoid spamming list with multiple mails]

On 13:39 Sun 25 Nov     , Vincent Lefevre wrote:
> 
> Hi Vasudev,
> 
> I can still reproduce the bug with gedit and fonts-droid
> 20111207+git-1.

Only in gedit but still the behaviour is not the same as one you
mentioned.

> 
> On 2012-11-25 13:34:28 +0530, Vasudev Kamath wrote:
> > I tried to reproduce the bug you mentioned in fonts-droid. Attaching the
> > screen shots.
> 
> I don't see any attached screenshot.

Sorry forgot to attach screenshots

> 
> > As you can see in gedit it shows  áe with top bar between
> > a and e
> 
> which is an incorrect behavior. So, you can reproduce the bug (but
> it remains to determinate whether it is a bug in the font or in
> the rendering engine).

But in case of other fonts it bar goes on top of 

> 
> > this I assume is natural because Mono fonts assume all glyphs
> > are uni width but á is not uni width glyph hence can't be placed in a
> > single cell. This is my assumption I may be wrong but please enlighten
> > me if so.
> 
> This is wrong. For instance, there's no such problem with
> DejaVuSansMono.ttf. So, there's something incorrect in some
> Mono fonts (but not all). Unfortunately, I am not an expert
> and I don't know what.

I checked with DejaVu and FreeMono and it indeed renders as expected but
behaviour is bit different in case of Droid Sans Mono but totally wrong
in bitstream and liberation and Inconsolata too!

> 
> > Now the same font renders fine in konsole see the second screen shot
> > which means font is proper but if the issue exists its indeed in engine
> > which is rendering it in gedit. IIRC gnome uses pango and KDE qt
> > rendering engines so is that why its rendering so?
> 
> It can be a possibility. But qt might also have some workaround (or
> don't look at all font properties, which could mean that you may see
> the effect of two bugs that compensate, but I don't know...).
> 
> The fact that two different Mono fonts show different behaviors with
> some renderer makes me think that it is more probably a problem in
> some fonts.

I'm also not sure because Droid Sans Mono renders perfectly fine in
Konsole and others don't so even I'm not sure what is wrong!

Regards
-- 
Vasudev Kamath
http://copyninja.info
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