Spacing with Font Roboto

Alexander Krumeich alexander.krumeich at
Mon Dec 9 15:01:05 CET 2019

Dear TL,

using the Roboto font results in strange spacing in the text layer of
the resulting PDF document. The page looks good on paper, but in the
text representation a space is added after some characters. Consider
the following MWE:


This is a test.

Following is a verbatim copy of the characters when I mark and copy
them from my PDF viewer:

T h is
te s t.

When I go back through older versions of my documents, I notice that
this behaviour was introduced sometime after May 9th. There's been a
change to the Roboto package in June. Possibly, something has been
broken with that update.

I'm using lualatex 1.10 on a freshly installed TeXLive. Listfiles
shows the files:
 *File List*
scrartcl.cls    2019/10/12 v3.27 KOMA-Script document class (article)
scrkbase.sty    2019/10/12 v3.27 KOMA-Script package (KOMA-Script-dependent bas
ics and keyval usage)
 scrbase.sty    2019/10/12 v3.27 KOMA-Script package (KOMA-Script-independent b
asics and keyval usage)
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
scrlfile.sty    2019/10/12 v3.27 KOMA-Script package (loading files)
tocbasic.sty    2019/10/12 v3.27 KOMA-Script package (handling toc-files)
scrsize11pt.clo    2019/10/12 v3.27 KOMA-Script font size class option (11pt)
typearea.sty    2019/10/12 v3.27 KOMA-Script package (type area)
fontspec.sty    2019/10/19 v2.7d Font selection for XeLaTeX and LuaLaTeX
  xparse.sty    2019-10-11 L3 Experimental document command parser
   expl3.sty    2019-11-07 L3 programming layer (loader)
expl3-code.tex    2019-11-07 L3 programming layer
l3deprecation.def    2019-04-06 v L3 Deprecated functions
l3backend-pdfmode.def    2019-04-06 L3 backend support: PDF mode
fontspec-luatex.sty    2019/10/19 v2.7d Font selection for XeLaTeX and LuaLaTeX

   tuenc.def    2018/08/11 v2.0j Standard LaTeX file

 430 words of node memory still in use:
   3 hlist, 1 vlist, 1 rule, 2 glue, 3 kern, 1 glyph, 5 attribute, 52 glue_spec
, 5 attribute_list, 1 write nodes
   avail lists: 2:21,3:3,4:1,5:24,6:1,7:29,9:10,11:3

Any hints? Thanks a lot!


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