[okular] [Bug 504451] Most of the text in RISC-V ISA specification PDF is invisible

[Jure Repinc]

https://bugs.kde.org/show_bug.cgi?id=504451

--- Comment #5 from Jure Repinc <jlp at holodeck1.com> ---
Yeah, works fine in Okular from Flathub. Do they use different fonts or
something else is maybe different.

This is the info from openSUSE:

$ pdffonts -subst riscv-privileged-20250508.pdf 
name                                 object ID substitute font                 
    substitute font file
------------------------------------ ---------
------------------------------------ ------------------------------------
Courier                                 138  0 Courier                         
    /usr/share/fonts/truetype/Courier.ttf

Flathub Okulart says /run/host/fonts/truetype/Courier.ttf for the non-embedded
font.
/usr/share/fonts/truetype/Courier.ttf on openSUSE is coming from
xorg-x11-fonts-converted package of version 7.6
$ fc-query /usr/share/fonts/truetype/Courier.ttf
Pattern has 29 elts (size 32)
        family: "Courier"(s)
        familylang: "en"(s)
        style: "Regular"(s)
        stylelang: "en"(s)
        fullname: "Courier"(s)
        fullnamelang: "en"(s)
        slant: 0(i)(s)
        weight: 80(f)(s)
        width: 100(f)(s)
        spacing: 100(i)(s)
        foundry: "PfEd"(s)
        file: "/usr/share/fonts/truetype/Courier.ttf"(s)
        index: 0(i)(s)
        outline: True(s)
        scalable: True(s)
        charset: 
        0000: 00000000 ffffffff ffffffff 7fffffff 00000000 ffffdffe ffffffff
ffffffff
        0001: ffceffff ffffcff7 ffff3dff 7f0fffff 00040000 00000000 00000000
00200000
        0002: 00000000 00000000 00000000 00000000 00000000 00000000 3f0000c0
00000000
        0003: 00000000 00000000 00000000 00000000 01080000 00320048 00000059
00000000
        0020: 77980000 56010047 00000010 eff10000 00000000 00000080 00000000
00000000
        0021: 00000000 00000044 78000000 00000000 003f0000 00200100 00000000
00000000
        0022: c4040000 10000200 00000100 00000033 00000000 00000000 00000000
00000000
        0023: 00010004 00000003 00000000 00000000 00000000 00000000 00000000
00000000
        0025: 11111005 10101010 ffff0000 00001fff 000f1111 10440001 03000801
00000000
        0026: 00000000 1c000000 00000005 00000c69 00000000 00000000 00000000
00000000
        00fb: 0000001f 00000000 00000000 00000000 00000000 00000000 00000000
00000000
(s)
        lang:
aa|ay|bi|br|ca|ch|co|cs|da|de|en|eo|es|et|eu|fi|fj|fo|fr|fur|fy|gd|gl|gv|ho|hu|ia|id|ie|io|is|it|ki|kl|lb|lt|mg|mh|mt|nb|nds|nl|nn|no|nr|nso|oc|om|pl|pt|rm|sk|sma|smj|so|sq|ss|st|sv|sw|tk|tl|tn|tr|ts|uz|vo|vot|wa|wen|wo|xh|yap|zu|an|crh|csb|fil|hsb|ht|jv|kj|ku-tr|kwm|lg|li|ms|na|ng|pap-an|pap-aw|rn|rw|sc|sg|sn|su|za|agr|ayc|bem|dsb|lij|mfe|mjw|nhn|niu|tpi|unm|wae|yuw(s)
        fontversion: 65732(i)(s)
        capability: "otlayout:latn"(s)
        fontformat: "TrueType"(s)
        decorative: False(s)
        postscriptname: "Courier"(s)
        color: False(s)
        symbol: False(s)
        variable: False(s)
        fonthashint: True(s)
        order: 0(i)(s)
        namedinstance: False(s)
        fontwrapper: "SFNT"(s)


pdffonts riscv-privileged-20250508.pdf 
name                                 type              encoding         emb sub
uni object ID
------------------------------------ ----------------- ---------------- --- ---
--- ---------
acec3e+AtkinsonHyperlegible-Regul    TrueType          WinAnsi          yes no 
yes     10  0
bd3584+AtkinsonHyperlegible-Bold     TrueType          WinAnsi          yes no 
yes     29  0
289fed+JetBrainsMono-Regular         TrueType          WinAnsi          yes no 
yes     41  0
b27510+AtkinsonHyperlegible-Itali    TrueType          WinAnsi          yes no 
yes     30  0
fe6826+AtkinsonHyperlegible-Itali    TrueType          WinAnsi          yes no 
yes     31  0
3a96a3+AtkinsonHyperlegible-BoldI    TrueType          WinAnsi          yes no 
yes     35  0
e01585+mplus-1p-regular              TrueType          WinAnsi          yes no 
yes     36  0
2ba361+JetBrainsMono-Italic          TrueType          WinAnsi          yes no 
yes     42  0
f3805c+FontAwesome5Free-Solid        TrueType          WinAnsi          yes no 
yes     54  0
95c240+JetBrainsMono-Bold            TrueType          WinAnsi          yes no 
yes    127  0
dda707+mplus-1p-regular              TrueType          WinAnsi          yes no 
yes    128  0
Courier                              Type 1            WinAnsi          no  no 
no     138  0
a07d50+AtkinsonHyperlegible-Regul    TrueType          WinAnsi          yes no 
yes    201  0
fadaa0+JetBrainsMono-Regular         TrueType          WinAnsi          yes no 
yes    409  0

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