Why is the following regex not working in C using regcomp

Question

I have the following regex to match the last pair of braces in a string,

.+(?={)(.+)(?=})

The example string is,

abc{abc=bcd}{g         


        

Answer 1

Anyway, regcomp uses POSIX BRE or ERE, which doesn't support look-ahead or look-behind.

.+{(.+)}

Grab the string you want from group index 1.

DEMO

Answer 2

Uses an anchor to specify the pattern should match when at the end of a line.

(?<=[{]).*(?=[}]$)