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Subject: Re: Mintty 2.4.0 and Deja Vu Sans Mono 2.35: issue with bold
To: cygwin AT cygwin DOT com
References: <f5bfurgc8hn DOT fsf AT troutbeck DOT inf DOT ed DOT ac DOT uk> <57840508 DOT 4080308 AT towo DOT net> <f5b37neao66 DOT fsf AT troutbeck DOT inf DOT ed DOT ac DOT uk> <FD39AB8C-C64B-4880-8B1D-8FE43723A9E0 AT etr-usa DOT com>
From: Thomas Wolff <towo AT towo DOT net>
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Date: Tue, 12 Jul 2016 21:26:12 +0200
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Am 12.07.2016 um 17:27 schrieb Warren Young:
> ...
Windows reports the font metrics of the bold font sometimes slightly 
differently than the normal font.
Due to rounding, it depends on the font size, e.g. with DejaVu it 
happens with 12pt, 14pt, and larger, but not with 13pt, 11pt, and 
smaller. I do not know why that happens.
If mintty detects the bold fontsize to be different from the normal 
fontsize, it does not use the bold font. I could tweak that to allow 
some small deviation, perhaps.
> It isn’t specific to Deja Vu, either, as the same thing happens with Lucida Console and Consolas.
For Lucida Console, it's clear as there is no bold weight. Mintty could 
use the Windows-generated fake bold in that case but it rather generates 
its own.
> That said, if you create a Wordpad document with the same faces, sizes, and weights, bold is more clearly distinguished at high point sizes.
Mintty generates "faux-bold" by overstriking with a pixel offset of 1. 
Maybe it should scale the thickness with the font size (like it does now 
for manual underline and VT100 line drawing graphics), at increased risk 
of clipping, however.

Suggestions welcome.
Thomas

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