Plotmath on Fedora 31 broken with with pango >= 1.44 - workarounds?
Thanks for this Gabriel - extremely useful. Those results look pretty good. Paul
On 8/04/20 9:55 pm, Gabriel Becker wrote:
Hi Paul,
So I've run the tests?(and am? attaching all numerous pdfs here) but the
takeaway from what I can see is as follows:
raw, without specifying font family, "look good" (see plot*raw.pdf)
from your branch (my eye is upset by the positioning of the phi symbol
in plot2, but I've confirmed that it looks the same generated from
3.5.1, so that?isn't?your branch).
The various font family settings seem to work too, from what I can tell.
Both font families?you suggested, however, Helvetica and Apple Symbols
(the s is important) have significantly incomplete coverage with PUA on.
Apple Symbols does have nearly complete coverage (though? to my eye the
symbols are all smaller...) with PUA turned off, but Helvetica remains
very spotty, with disabling PUA only modestly increasing it's coverage,
and not in the places that seem likely to matter.
I hope that helps,
~G
On Tue, Apr 7, 2020 at 8:59 PM Gabriel Becker <gabembecker at gmail.com
<mailto:gabembecker at gmail.com>> wrote:
Paul et al,
I will try to do this tonight or tomorrow, though it will not be
built with th system tools because I have yet to get that tto work
locally (spent a good chunk of this morning trying).
I will send a separate messaage?regarding those difficulties as well
so that we can at least confirm that they are due to a
malconfiguration on my part.
Best,
~G
On Tue, Apr 7, 2020 at 7:25 PM Paul Murrell
<paul at stat.auckland.ac.nz <mailto:paul at stat.auckland.ac.nz>> wrote:
The R-symfam branch (r78176) is now working, for my basic tests,
on ...
Ubuntu (pango < 1.44)
Ubuntu (no pango)
Fedora (pango > 1.44)
Windows
I need help to confirm that this builds on macOS and that the basic
tests work ...
https://github.com/pmur002/R-symfam-testing
Brian has been helping with the build, but I am still looking for
someone who can run the tests please.? Happy to be fed PDF files to
scrutinize myself;? it's generating the PDF files on macOS that
I need
help with.
Paul
On 6/04/20 2:59 pm, Paul Murrell wrote:
> Hi
>
> The R branch ...
>
> https://svn.r-project.org/R/branches/R-symfam/
>
> ... is now set up so that it works "out of the box" on Fedora
by setting
> the default to be 'symbolfamily=cairoSymbolFont(family,
usePUA=FALSE)'
> when grSoftVersion()["pango"] is greater than "1.44".
>
> This means that on Fedora 31 (at least on the Docker
container I am
> testing on) "sans"->"NimubusSans" is used as the symbol font
by default
> and R converts Adobe Symbol Encoding code points to non-PUA
UTF8 code
> points.? This is not the prettiest result, but it is a lot
better than
> the page full of missing glyphs that we had.
>
> The default on less "bleeding edge" systems, e.g., my Ubuntu
18.04,
> remains 'symbolfamily="Symbol"'.
>
> The default on other platforms is supposed to be the same as
it was, but
> I need help to confirm that.? I have set up a github repo ...
>
> https://github.com/pmur002/R-symfam-testing
>
> ... that describes how to test this on macOS and Windows if
anyone has
> time to do so.
>
> I will start trying to set up a Windows test unless someone
beats me to it.
>
> Paul
>
> On 30/03/20 3:24 pm, Paul Murrell wrote:
>> Hi
>>
>> I have created an R branch that contains a potential fix ...
>>
>> https://svn.r-project.org/R/branches/R-symfam/
>>
>> This allows, for example, ...
>>
>> cairo_pdf(symbolfamily="OpenSymbol")
>>
>> ... to specify that the OpenSymbol family should be used as the
>> "symbol" font (e.g., for "plotmath") in R.
>>
>> This is just a separate branch for now because, while I have
tested it
>> under Unbuntu 18.04 and Fedora 31, I cannot even build R for
Windows
>> (right now) or Mac (ever) and I do not want to drop a bomb
on R-devel
>> at this stage of the release process for R 4.0.0.
>>
>> The attached file contains at least an outline of steps
required to do
>> a minimal test if anyone wants to try the fix on Linux.
>>
>> cc'ing Simon and Jeroen in case they are able to help with
checking
>> that this builds and works on Mac and/or Windows.
>>
>> NOTEs:
>> - 'symbolfamily' can only be specified when a graphics
device is
>> opened, and it is then fixed for that device.
>> - on Windows, for cairo-based devices, the "symbol" font is
still
>> hard-coded as "Standard Symbols L"
>>
>> Paul
>>
>> On 30/03/20 8:15 am, Paul Murrell wrote:
>>> Hi
>>>
>>> Thanks for your input on this I?aki and Nicolas.
>>>
>>> I am starting testing an R fix for this problem today.
>>>
>>> As suggested, the plan is to allow the R user to specify a
font
>>> family other than "symbol" for plotmath output (or, more
generally,
>>> in R parlance, for 'font=5' or 'fontface=5') on a Cairo-based
>>> graphics device.
>>>
>>> Paul
>>>
>>>
>>> On 27/03/20 11:30 pm, I?aki Ucar wrote:
>>>> On Wed, 25 Mar 2020 at 12:25, Nicolas Mailhot
>>>> <nicolas.mailhot at laposte.net
<mailto:nicolas.mailhot at laposte.net>> wrote:
>>>>>
>>>>> <snip>
>>>>>
>>>>> R brought this all on itself by hardcoding a Windows-only
?Symbol?
>>>>> font
>>>>> family name in its default conf. Linux systems are UTF-8
by default
>>>>> for
>>>>> ~20 years now, they don?t need the forcing of magic font
families to
>>>>> handle symbols not present in the 8-bit legacy Windows
encodings.
>>>>>
>>>>> The actual effect of this conf is not the selection of
font files with
>>>>> special and unusual symbols. It is to priorize fonts that
match the
>>>>> "Symbol" magic name. And those fonts are few and
crumbling on Linux
>>>>> systems, because no one has needed to bother with them
since Linux
>>>>> switched to UTF-8 last millenium.
>>>>>
>>>>> Just stop using ?Symbol? in R and things will work a lot
better.
>>>>> Alternatively, prepare to maintain the ?Symbol? aliasing
stack in
>>>>> fontconfig (and fight with wine for it), because *no*
*one* *else*
>>>>> *cares* about this legacy Windows-specific stuff.
>>>>
>>>> So, in the light of Nicolas' input (thanks!), I think that
font
>>>> selection should be fixed upstream in R. I'd be happy to
put all this
>>>> together in R's bugzilla, but I don't have an account.
Could someone
>>>> please invite me?
>>>>
>>>> I?aki
>>>>
>>>> ______________________________________________
>>>> R-devel at r-project.org <mailto:R-devel at r-project.org>
mailing list
>>
>
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz <mailto:paul at stat.auckland.ac.nz>
http://www.stat.auckland.ac.nz/~paul/
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