neelance/ffi_gen — comment on commit 61f1e16490674e074ab6777e80776335c621a864
File: lib/ffi_gen.rb line 576
By tsion:

You should use `\0` rather than `\1` here:

``` irb
>> "123abc".sub(/^\d/, '_\1')
=> "_23abc"
>> "123abc".sub(/^\d/, '_\0')
=> "_123abc"
```