Re: U-umlaut and two-letter combination

[Shmuel Zeigerman <shmuz@...>]

Florian Berger wrote:
> I have a simple question about string searching. Let's say that I want 
> to know if city "Muenchen" is found in text. If I don't know the source 
> of text the city might be written like "Muenchen" or "München". I would 
> like to make my search support both versions with single search pattern. 
> Something like: string.find(txt, "m[ü or ue]nchen"). The problem is that 
> the alternatives don't have the same length. Otherwise they could be put 
> to a set. Is there any simple solution to this problem?

You may use POSIX regexp or PCRE binding for Lua, such as Lrexlib:

local pcre = require 'pcre'
local r = pcre.newPCRE("m(ü|ue)nchen")
local Start,End = r:match(txt)

--
Shmuel