summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/l-unicode.lua
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2015-05-08 22:36:52 +0000
committerKarl Berry <karl@freefriends.org>2015-05-08 22:36:52 +0000
commit5dc3418fd91c83782dce77f0b65549e14f118f51 (patch)
tree9b4ec94c1bb0be9831fd3b887de69df098d46211 /Master/texmf-dist/tex/context/base/l-unicode.lua
parentb810c0301dd20283addb956384210b7926eef35d (diff)
context
git-svn-id: svn://tug.org/texlive/trunk@37284 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/context/base/l-unicode.lua')
-rw-r--r--Master/texmf-dist/tex/context/base/l-unicode.lua12
1 files changed, 8 insertions, 4 deletions
diff --git a/Master/texmf-dist/tex/context/base/l-unicode.lua b/Master/texmf-dist/tex/context/base/l-unicode.lua
index 02dd1a00304..70b60324ac2 100644
--- a/Master/texmf-dist/tex/context/base/l-unicode.lua
+++ b/Master/texmf-dist/tex/context/base/l-unicode.lua
@@ -418,9 +418,11 @@ if not utf.sub then
end
end
- local pattern_zero = Cmt(p_utf8char,slide_zero)^0
- local pattern_one = Cmt(p_utf8char,slide_one )^0
- local pattern_two = Cmt(p_utf8char,slide_two )^0
+ local pattern_zero = Cmt(p_utf8char,slide_zero)^0
+ local pattern_one = Cmt(p_utf8char,slide_one )^0
+ local pattern_two = Cmt(p_utf8char,slide_two )^0
+
+ local pattern_first = C(patterns.utf8character)
function utf.sub(str,start,stop)
if not start then
@@ -463,7 +465,9 @@ if not utf.sub then
end
end
end
- if start > stop then
+ if start == 1 and stop == 1 then
+ return lpegmatch(pattern_first,str) or ""
+ elseif start > stop then
return ""
elseif start > 1 then
b, e, n, first, last = 0, 0, 0, start - 1, stop