ignore Makefile_* ?

[RolfSander]

Via .gitignore, several KPP-generated files are excluded from the repo, e.g.:

Makefile_*

However, this also excludes util/Makefile_*. I think that the .gitignore entry
needs to be changed to

/Makefile_*

Similarly, maybe *_Hessian* needs to be changed.

[yantosca]

Thanks @RolfSander, I was away for a while but am back now. I can prepare a PR for this.

[RolfSander]

Thanks, @yantosca!

Maybe we should do a general cleanup of .gitignore?

I think that we can add the prefix / to all entries in the
"KPP-generated files" section of .gitignore but I haven't tested this
yet.

Next, there is the section about LaTeX and BibTeX files. I guess that
can be removed completely because we don't have the manual/
subdirectory anymore.

The line /ci-tests/**/*.exe is redundant because we already ignore all
*.exe files.

Maybe there's no need to ignore *.dat files because there are no
*.dat anyway?

[yantosca]

Thanks @RolfSander. I've pushed a fix that I think does all this now in commit e30928f.

[RolfSander]

I fear that **/*_Hessian* also applies to the util/Mex_Hessian.*
files. However, they should not be ignored. Maybe they can be
"un-ignored" by adding these lines:

!/util/*.f
!/util/*.f90
!/util/*.c
!/util/*.m

[RolfSander]

BTW, you can use these commands to show which files are currently
ignored:

git status --ignored

and

git ls-files -i -o --exclude-standard

(AFAIK, these commands give the same output, maybe except for untracked
files.)

[RolfSander]

Hmm, maybe this command is better:

git ls-files -i -c --exclude-standard

It tells me that there is another problem: With *.pdf, we also ignore
the files docs/figures/*.pdf. So probably we need this:

*.pdf
!/docs/figures/*.pdf

[yantosca]

Thanks @RolfSander for that update. I believe I've now got this working properly in a7d6bf9. I now explicitly request source code files/Makefiles in util/ to be retained (plus the figures).

[yantosca]

Closing this issue as PR #141 is now merged.