[rkward] [Bug 462177] New: Greek letters are not displayed in plots

[Francisco Cribari]

https://bugs.kde.org/show_bug.cgi?id=462177

            Bug ID: 462177
           Summary: Greek letters are not displayed in plots
    Classification: Applications
           Product: rkward
           Version: unspecified
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: rkward-devel at kde.org
          Reporter: cribari at gmail.com
  Target Milestone: ---

Created attachment 153977
  --> https://bugs.kde.org/attachment.cgi?id=153977&action=edit
Screenshot

SUMMARY
***
I run RKWad version 0.7.5-1 under Arch Linux + KDE. Greek letters do not show
up in R plots in RKward 
***

STEPS TO REPRODUCE
1.  Start RKWard
2.  Execute: a = rnorm(10000); hist(a, main = expression(paste(mu,"=0")))
3. I see a blank square instead of the Greek letter "mu" in the title of the
plot

OBSERVED RESULT

A black square is shown instead of the Greek letter "mu"  (see the attached
screenshot)

EXPECTED RESULT

The Greek letter "mu" should be displayed in the title of the plot 

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Arch Linux + KDE 
(available in About System)
KDE Plasma Version: 5.26.3
KDE Frameworks Version: 5.100.1
Qt Version: 5.15.7

ADDITIONAL INFORMATION
--- Please fill in ---
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from the "Help" menu inside RKWard. Otherwise, please make sure to read
http://rkward.kde.org/bugs for guidelines on what information to include in
your report. ---

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