Improving hgignore

[John W. Eaton]

On 23-Feb-2011, Jordi Gutiérrez Hermoso wrote:

| Attached is a proposed patch to improve hgignore. I find it a little
| awkward that there are all these untracked files that inevitably get
| added to the source tree during build time and clutter the output of
| "hg st". I'm not exactly sure about a few of these, like explicitly
| filtering out Emacs files or ignoring most of m4/ and libgnu/
| directories except the files that are explicitly in "hg manifest".
| 
| If there are no complaints within a couple of days, I'll push this patch.

| +# These directories mostly contain cruft during build time, but they
| +# do contain Octave code. Should they have a more careful filter?
| +(^|/)libgnu($|/)
| +(^|/)m4($|/)

All files except Makefile.am in the libgnu directory can be ignored.
The Makefile.am file is already checked in, and we should not be
adding any other files there, so I think it is OK to just ignore the
entire directory.

Maybe we should put the Octave m4 files in a separate directory so we
can ignore all files in the m4 directory since they would then all be
automatically generated except module.mk, but again we would not be
adding any files to the m4 directory, so it should then be safe to
ignore the entire directory.

Please add a newline to the end of the file before pushing.

Thanks.

jwe