On Thu, Oct 19, 2023 at 07:42:38AM +0200, Markus Armbruster wrote:
> Victor Toso <victort...@redhat.com> writes:
> 
> > On Wed, Oct 18, 2023 at 01:00:07PM +0200, Markus Armbruster wrote:
> >> Victor Toso <victort...@redhat.com> writes:
> >> 
> >> > flake8 complained:
> >> >     ./main.py:60:1: E302 expected 2 blank lines, found 1
> >> >
> >> > Which is simple enough. My vim has black [0] enabled by default, so it
> >> > did some extra formatting. I'm proposing to follow it.
> >> >
> >> > [0] https://black.readthedocs.io/en/stable/
> >> >
> >> > Signed-off-by: Victor Toso <victort...@redhat.com>
> >> > ---
> >> >  scripts/qapi/main.py | 76 ++++++++++++++++++++++++++++----------------
> >> >  1 file changed, 48 insertions(+), 28 deletions(-)
> >> 
> >> Is this all black hates about scripts/qapi/?
> >
> > No, just scripts/qapi/main.py.
> >
> >> Did you configure it in any way, and if yes, how?
> >
> > Only to reduce line length to 79.
> >
> > I can do a separate series for this, if the idea is accepted.
> 
> Let's build a rough idea of how much churn this would be.
> 
> We have a bit over 5000 lines:
> 
>     $ wc -l scripts/qapi/*py
>        419 scripts/qapi/commands.py
>        251 scripts/qapi/common.py
>         50 scripts/qapi/error.py
>        251 scripts/qapi/events.py
>        679 scripts/qapi/expr.py
>        368 scripts/qapi/gen.py
>        390 scripts/qapi/introspect.py
>        103 scripts/qapi/main.py
>        777 scripts/qapi/parser.py
>       1233 scripts/qapi/schema.py
>         71 scripts/qapi/source.py
>        387 scripts/qapi/types.py
>        429 scripts/qapi/visit.py
>       5408 total
> 
> Feed them to black:
> 
>     $ black -q -l 75 scripts/qapi
>     $ git-diff --stat
>      scripts/qapi/commands.py   | 448 +++++++++++++++++-----------
>      scripts/qapi/common.py     | 240 ++++++++++-----
>      scripts/qapi/error.py      |  15 +-
>      scripts/qapi/events.py     | 274 +++++++++++-------
>      scripts/qapi/expr.py       | 409 ++++++++++++++++----------
>      scripts/qapi/gen.py        | 187 +++++++-----
>      scripts/qapi/introspect.py | 323 +++++++++++++--------
>      scripts/qapi/main.py       |  80 +++--
>      scripts/qapi/parser.py     | 370 +++++++++++++----------
>      scripts/qapi/schema.py     | 709 
> +++++++++++++++++++++++++++++----------------
>      scripts/qapi/source.py     |  17 +-
>      scripts/qapi/types.py      | 369 ++++++++++++++---------
>      scripts/qapi/visit.py      | 355 ++++++++++++++---------
>      13 files changed, 2383 insertions(+), 1413 deletions(-)
> 
> *Ouch*
> 
> Peeking at the result, I see string quote normalization.  Try again with
> that switched off, and the line length relaxed:
> 
>     $ black -q -l 79 -S scripts/qapi
>     $ git-diff --stat
>      scripts/qapi/commands.py   | 357 +++++++++++++++++++++------------
>      scripts/qapi/common.py     | 170 ++++++++++++----
>      scripts/qapi/error.py      |  11 +-
>      scripts/qapi/events.py     | 220 +++++++++++++-------
>      scripts/qapi/expr.py       | 261 +++++++++++++++---------
>      scripts/qapi/gen.py        | 114 ++++++-----
>      scripts/qapi/introspect.py | 231 +++++++++++++--------
>      scripts/qapi/main.py       |  72 ++++---
>      scripts/qapi/parser.py     | 224 ++++++++++++---------
>      scripts/qapi/schema.py     | 488 
> +++++++++++++++++++++++++++++++--------------
>      scripts/qapi/source.py     |   7 +-
>      scripts/qapi/types.py      | 303 ++++++++++++++++++----------
>      scripts/qapi/visit.py      | 287 ++++++++++++++++----------
>      13 files changed, 1802 insertions(+), 943 deletions(-)
> 
> Still massive churn.

FWIW, the .git-blame-ignore-revs file can be populated with commit
hashes afterwards, to make 'git blame' ignore the reformatting
changes. Doesn't help with people cherry-picking fixes to old
branches though, which is the other main downside of such churn.

With regards,
Daniel
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