Is there a way I can do a string pattern that will match "ab|cd" so it matches for either "ab" or "cd" in the input string. I know you use something like "[ab]" as a pattern and it will match for e...

I apply a function, but looks so bad. function find_without_pattern(s1,s2) for i =1,#s1-#s2+1 do local t = string.sub(s1,i,#s2+i-1) if t == s2 then return i,i+#s2-1 end end end

Suppose I am inserting a string into a table as follows: table.insert(tbl, mystring) and that mystring is generated by replacing all occurrences of "a" with "b" in input: mystring = string.gsub...

I am trying to remove '$' signs from a string, but I am guessing it is some special char? I am extremely new to lua (just started coding in it today). From my understanding this should work and doe...

I'm using Lua string.match to extract some values of a HTML but I'm having some problems with some attributes. To extract a phone number like this: 0000-0000, I'm using the mask: local value = st...

How do I get the file name from a URL using Lua string manipulations. I have this url https://thisisarandomsite.com/some_dir/src/blah/blah/7fd34a0945b036685bbd6cc2583a5c30.jpg And I want to get ...

I have a string I need to add a variable to so I use the string.format method, but the string also contains the symbol "%20" (not sure what it represents, probably a white space or something). Anyw...

I'm trying to do a library in Lua with some function that manipulate strings. I want to do a function that changes the letter case to upper only on odd characters of the word. This is an example: ...

In Lua there's only string.find, but sometime string.rfind is needed. For example, to parse directory and file path like: fullpath = "c:/abc/def/test.lua" pos = string.rfind(fullpath,'/') dir = st...

I'm trying to make a simple string manipulation: getting the a file's name, without the extension. Only, string.find() seem to have an issue with dots: s = 'crate.png' i, j = string.find(s, '.') p...

I have a standard Windows Filename with Path. I need to split out the filename, extension and path from the string. I am currently simply reading the string backwards from the end looking for . to...

I'm trying to match a string against a pattern, but there's one thing I haven't managed to figure out. In a regex I'd do this: Strings: en eng engl engli englis english Pattern: ^en(g(l(i(s(h?)?)...

English isn't my mother tongue,so it's a little hard to describe the question. I wanna to get 'd=40' in str by lua string.gsub(),but there's some problem. ------code below--- local str = [==[ ...

I'm starring at these few (slightly modified) lines from luadoc that are obviously building a filename with a full path. But I simply don't get it what happens in line 5. The parameter filename cou...

I've been playing with this for an hour or tow and have found myself at a road block with the Lua pattern matching utilities. I am attempting to match all quoted text in a string and replace it if ...

How would i do this? I got this: name = "^aH^ai" string.gsub(name, "^a", "") which should return "Hi", but it grabs the caret character as a pattern character What would be a work around for ...