diff options
Diffstat (limited to 'tex/context/base/mkiv/char-ini.lua')
| -rw-r--r-- | tex/context/base/mkiv/char-ini.lua | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tex/context/base/mkiv/char-ini.lua b/tex/context/base/mkiv/char-ini.lua index 1c53d924f..1e8c1f7d3 100644 --- a/tex/context/base/mkiv/char-ini.lua +++ b/tex/context/base/mkiv/char-ini.lua @@ -1283,9 +1283,9 @@ lpegpatterns.utf8lower = utf8lower -- string lpegpatterns.utf8upper = utf8upper -- string lpegpatterns.utf8shape = utf8shape -- string -function characters.lower (str) return lpegmatch(utf8lower,str) end -function characters.upper (str) return lpegmatch(utf8upper,str) end -function characters.shaped(str) return lpegmatch(utf8shape,str) end +function characters.lower (str) return str and lpegmatch(utf8lower,str) or "" end +function characters.upper (str) return str and lpegmatch(utf8upper,str) or "" end +function characters.shaped(str) return str and lpegmatch(utf8shape,str) or "" end -- local str = [[ -- ÀÁÂÃÄÅàáâãäå àáâãäåàáâãäå ÀÁÂÃÄÅÀÁÂÃÄÅ AAAAAAaaaaaa |