Re: Looking for some examples

[2QdxY4RzWzUUiLuE@potatochowder.com]

On 2021-10-06 at 22:32:15 +0200,
Stephen Berman <stephen.berman@gmx.net> wrote:

> On Wed, 6 Oct 2021 12:30:40 -0700 Patrick Mahan <plmahan@gmail.com> wrote:
> 
> > I've looked around on the wiki and googled, but I haven't really found any
> > examples.
> >
> > I am cleaning a bunch of old code with tons of CPP macros of the form -
> > #define MACRONAME(_arg1, _arg2) \
> >     do {                                                   \
> >         /* code */                                       \
> >     } while (0)
> >
> > I am converting these all to inline functions and already have some emacs
> > lisp code written to handle converting everything but the backslashes.  I
> > would like to remove the backslashes, but I do not want to leave all that
> > empty whitespace behind.  Is there a way to do this using
> > query-replace-regexp that also removes the whitespace?
> 
> C-M-% [[:space:]]+\\$ RET RET !

That won't remove the backslashes that *aren't* preceded by whitespace,
which may or may not be a problem in your case.  To address that, change
the + (one or more) to a * (zero or more):

    C-M-% [[:space:]]*\\$ RET RET !