sed not working

[Rein Kadastik]

Rein Kadastik wrote:

> Hi
>
> I have a problem with sed on one of my systems.
>
> Lets take the following command:
>
> sed -e '/^\([a-z_][a-z_]*\) /s//\1 gen_/'
>
> On all other systems the input would be transformed:
> int something() -> int gen_something()
>
> On the broken system, the transformation is not done:
> int something() -> int something()
>
> The broken system used to be 4.6-STABLE but I managed to upgrade it to 
> 4.11-RELEASE-p11, hoping that the update procedure will fix the sed, 
> but apparently not. Imagine the make buildworld without working sed :) 
> Anyway I generated the files on other working system so I managed to 
> get through the buildworld part. Installkernel and installworld did 
> not used sed so no problems there.
>
> Does anybody have some ideas, what would be the reason? I tested the 
> sed command also on 4.8-RELEASE and 4.10-STABLE where it works nicely. 
> Even copied the sed over from working systems but no luck.
>
> -- Rein
> _______________________________________________
> freebsd-questions at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to 
> "freebsd-questions-unsubscribe at freebsd.org"
>
Well let me make the problem description a bit more precise as I found 
some pattern:

the following works:
a b() -> a gen_b()

but this does not:
int b() -> int b()

Very strange that if I write the specific first token, the 
transformation is not done.

--Rein