LRIM/RTRIM/TRIM built in functions

[boriel]

It would be handy to have a 

LTRIM
RTRIM
TRIM

functions built in to ZXB

I know you could right one but I wonder if there is a faster way to be compiled?

thanks

Ok, I've implemented ltrim(s, subs), rtrim(s, subs) and trim(s, sub) which trim the string subs in the respective side of s.
They're in #include <string.bas> in this new version:

http://www.boriel.com/files/zxb/zxbasic-...ta1.tar.gz
http://www.boriel.com/files/zxb/zxbasic-...-beta1.zip
http://www.boriel.com/files/zxb/zxbasic-...-win32.zip
http://www.boriel.com/files/zxb/zxbasic-...x64.tar.gz
http://www.boriel.com/files/zxb/zxbasic-...cos.tar.gz

Please, try it and tell me  

An example:

Code:

#include <string.bas>

print "'"; ltrim("", "a"); "'"
print "'"; ltrim("hello world", ""); "'"
print "'"; ltrim("hello world", "he"); "'"
print "'"; ltrim("hehello world", "he"); "'"
print "'"; ltrim("hehehe", "he"); "'"