diff options
Diffstat (limited to 'tex/context/base/mkiv/l-string.lua')
| -rw-r--r-- | tex/context/base/mkiv/l-string.lua | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/tex/context/base/mkiv/l-string.lua b/tex/context/base/mkiv/l-string.lua index 1dee85e28..476820a17 100644 --- a/tex/context/base/mkiv/l-string.lua +++ b/tex/context/base/mkiv/l-string.lua @@ -7,7 +7,7 @@ if not modules then modules = { } end modules ['l-string'] = { } local string = string -local sub, gmatch, format, char, byte, rep, lower = string.sub, string.gmatch, string.format, string.char, string.byte, string.rep, string.lower +local sub, gmatch, format, char, byte, rep, lower, find = string.sub, string.gmatch, string.format, string.char, string.byte, string.rep, string.lower, string.find local lpegmatch, patterns = lpeg.match, lpeg.patterns local P, S, C, Ct, Cc, Cs = lpeg.P, lpeg.S, lpeg.C, lpeg.Ct, lpeg.Cc, lpeg.Cs @@ -52,10 +52,26 @@ function string.quoted(str) return format("%q",str) -- always double quote end -function string.count(str,pattern) -- variant 3 +-- function string.count(str,pattern) -- variant 3 +-- local n = 0 +-- for _ in gmatch(str,pattern) do -- not for utf +-- n = n + 1 +-- end +-- return n +-- end + +function string.count(str,pattern) local n = 0 - for _ in gmatch(str,pattern) do -- not for utf - n = n + 1 + local i = 1 + local l = #pattern + while true do + i = find(str,pattern,i) + if i then + n = n + 1 + i = i + l + else + break + end end return n end |