diff options
Diffstat (limited to 'lualibs-string.lua')
| -rw-r--r-- | lualibs-string.lua | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/lualibs-string.lua b/lualibs-string.lua index e9dc2bb..be8f397 100644 --- a/lualibs-string.lua +++ b/lualibs-string.lua @@ -75,19 +75,19 @@ local collapser = patterns.collapser local longtostring = patterns.longtostring function string.strip(str) - return lpegmatch(stripper,str) or "" + return str and lpegmatch(stripper,str) or "" end function string.fullstrip(str) - return lpegmatch(fullstripper,str) or "" + return str and lpegmatch(fullstripper,str) or "" end function string.collapsespaces(str) - return lpegmatch(collapser,str) or "" + return str and lpegmatch(collapser,str) or "" end function string.longtostring(str) - return lpegmatch(longtostring,str) or "" + return str and lpegmatch(longtostring,str) or "" end -- function string.is_empty(str) @@ -99,7 +99,7 @@ local pattern = P(" ")^0 * P(-1) -- maybe also newlines -- patterns.onlyspaces = pattern function string.is_empty(str) - if str == "" then + if not str or str == "" then return true else return lpegmatch(pattern,str) and true or false @@ -163,7 +163,7 @@ function string.escapedpattern(str,simple) end function string.topattern(str,lowercase,strict) - if str=="" or type(str) ~= "string" then + if str == "" or type(str) ~= "string" then return ".*" elseif strict then str = lpegmatch(pattern_c,str) @@ -177,6 +177,7 @@ function string.topattern(str,lowercase,strict) end end +-- print(string.escapedpattern("abc*234",true)) -- print(string.escapedpattern("12+34*.tex",false)) -- print(string.escapedpattern("12+34*.tex",true)) -- print(string.topattern ("12+34*.tex",false,false)) |