[Bug-gnulib] Re: include-once-only macros

[Simon Josefsson]

Bruno Haible <address@hidden> writes:

> The practice is that one should avoid identifiers starting with '__',
> since they are very likely to lead to collisions. Symbols that start
> with '_' - in my experience - give less collisions than those without.

Perhaps it is simplest to leave code as is, then.

If consistency is a goal, some alternative ideas are:

#ifdef HEADER_*_H
#ifdef FILE_*_H
#ifdef INCLUDE_*_H
#ifdef GNULIB_*_H

I don't really like any of them, though.

Thanks,
Simon