[Okular-devel] [Bug 208121] incorrect space characters in pdf form

[atayoohoo at googlemail.com]

https://bugs.kde.org/show_bug.cgi?id=208121

atayoohoo at googlemail.com changed:

           What    |Removed                     |Added
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                 CC|                            |atayoohoo at googlemail.com

--- Comment #19 from atayoohoo at googlemail.com ---
The space rendering problem has nothing to do with cyrillic characters.
The document has a ToUnicode mapping that converts a 0x00 to a 0x20 space. Dump
of the first beginfbrange section in zp25.pdf (CharCodeToUnicode.cc:353), font
is TimesNewRomanCyr:
\d<00> <00> <0020> \d<41> <41> <0041> \d<42> <42> <0042> …………

When filling the form, the conversion is applied the other way round, 0x20 →
0x00, from Unicode to CID.
SplashOutputDev and CairoOutputDev do not show 0x00, but PSOutputDev maps 0x00
to a /.notdef character, which GhostScript draws as a rectangle.
So Poppler's behavior is actually correct.
However, Adobe Reader 9.4.2 also has problems with the map: On Linux/Gtk, every
second character in the form is drawn as a rectangle, because the first unicode
byte of a character is 0x00 in the lower ranges.
In the pdf specification examples, the conversion from 0x20 to 0x00 is used
explicitely. This bug seems to be a WONTFIX.

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