[QScintilla] QScintilla and Courier New on Linux with Infinality

[Craig Kelly]

I have no idea what the issue might be and why Courier New, but it's been
seen by quite a few people on Linux. Infinality seems to be a common issue,
but that might just be because Infinality under certain settings will alias
Monospace to Courier New.

Regardless, I just finished going to through some issue comment streams at
the Robomongo repo. These are the specs left by people reporting this
issue. There is a line per report, and the first line is me:

 * Debian Testing(8), Gnome, with Infinality (64-bit)
 * Ubuntu 12.04
 * Ubuntu 13.10 (64-bit)
 * Ubuntu 13.10, with Infinality
 * Ubuntu 14.04
 * Ubuntu 14.04
 * Linux Mint 17.1 Rebecca
 * Fedora 19, XFCE 4.10 (64-bit)
 * Fedora 20, with Infinality
 * Fedora 20
 * Fedora 20 (64-bit)
 * Fedora 20, Gnome 3.10.1, with Infinality
 * Fedora 20, Gnome
 * Fedora 21, Infinality
 * Arch Linux, XFCE (32-bit)

I know it's difficult to find a bug that can't be reproduced, so if there's
anything I can do to help find this bug please let me know.


On Mon, Mar 30, 2015 at 6:37 AM, Phil Thompson <phil at riverbankcomputing.com>
wrote:

> On 26/03/2015 8:58 pm, Craig Kelly wrote:
>
>> Greetings,
>>
>> Hopefully I'm using the correct mailing list :)
>>
>> I believe I might have found an issue with QScintilla under Qt5 on Linux
>> systems. When displaying Courier New, the line height appears to be too
>> low, so the text is being cut off on every line.
>>
>> I'm seeing it with Gnome on Debian Testing, but others have reported a
>> similar issue on other distros. I first noticed this as I was one of the
>> people affected by a product (Robomongo) using QScintilla. You can see
>> various people having this issue at
>> https://github.com/paralect/robomongo/issues/649, which includes a
>> screenshot. The Infinality patches (which I have) appear to be a common
>> denominator, but I'm not sure that's 100%.
>>
>> There is a repro script below my sig - on my computer running
>>
>> python3 demo.py "Courier New"
>>
>> Shows the issue, but a different monospaced font is fine. For instance,
>>
>> python3 demo.py "Andale Mono"
>>
>> works just fine
>>
>> Thanks so much for any help you can provide,
>> Craig
>>
>
> Works fine for me on a regular Kubuntu system.
>
> Phil
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