update and run clang-format

[KrisThielemans]

Finally enact #98

update: use one-per-line for parameters/arguments if they don't fit on one line. @danieldeidda @markus-jehl @casperdcl @dvolgyes any final comments on this file?

I will also push changes here, after one more PR is merged. This will therefore be rebased, commits dropped etc until happy.

[casperdcl]

apart from the (very minor) pointless indentation of some values in this file, lgtm

[KrisThielemans]

I ran

pre-commit install
pre-commit run --all-files
git commit -a --author="stir_maintenance <noreply@github.com>"

[KrisThielemans]

This looks largely ok. I'm surprised by the following change:

- General_Reconstruction::
- General_Reconstruction()
- {
-    this->set_defaults();
- }
+ General_Reconstruction::General_Reconstruction() { this->set_defaults(); }

I thought I was aiming for

General_Reconstruction::General_Reconstruction()
{
  this->set_defaults();
}

or something similar. Anyone knows what setting this is?

[KrisThielemans]

@casperdcl how does this work with git-fame. We run it to ignore white-space changes, but I guess this is per-line.

STIR/scripts/maintenance/git-fame.sh

Lines 20 to 21 in b486fc8

	git fame -wMC --excl '\.(eps|root|ahv|hv|v|hs|s|scan|l|hdr|rtf|gz|if|pdf|safir|options|png|cls|sty)$|external_helpers|crystal_map|collimator.*txt|Doxyfile.in|LICENSE.txt|LICENSES' \
	| tee git-fame-output.txt

Are all these non-trivial lines going to be attributed to stir-maintainer? If so, not much we can do about it I guess.

[KrisThielemans]

I couldn't get @ashgillman's suggested process #724 (comment) and #724 (comment) to work (I didn't rebase though). In the end, it looks like the following will have to be our recommendation for an existing branch. (replacing clangformat with origin/master after the merge of course).

git merge  clangformat -Xignore-all-space
# remove conflicts
pre-commit run --all-files

@casperdcl is this ok?

[KrisThielemans]

Ready so I'll merge. @casperdcl still interested in the questions above.

[KrisThielemans]

@casperdcl git fame -wMC... currently returns

| Author                 |    loc |   coms |   fils |  distribution   |
|:-----------------------|-------:|-------:|-------:|:----------------|
| Kris Thielemans        | 186580 |   6150 |   1646 | 63.4/69.5/25.2  |
| stir_maintenance       |  33628 |      3 |   1123 | 11.4/ 0.0/17.2  |
| Nikos Efthimiou        |  11496 |    367 |    281 | 3.9/ 4.1/ 4.3   |

This is a bit sad. I've created casperdcl/git-fame#94...

[casperdcl]

fyi https://docs.github.com/en/repositories/working-with-files/using-files/viewing-a-file#ignore-commits-in-the-blame-view :)