Re: run pgindent on a regular basis / scripted manner

Hi,

On 2023-10-18 12:15:51 -0700, Andres Freund wrote:
> I still think that one of the more important things we ought to do is to make
> it trivial to check if code is correctly indented and reindent it for the
> user.  I've posted a preliminary patch to add a 'indent-tree' target a few
> months back, at
> https://postgr.es/m/20230527184201.2zdorrijg2inqt6v%40alap3.anarazel.de
> 
> I've updated that patch, now it has
> - indent-tree, reindents the entire tree
> - indent-head, which pgindent --commit=HEAD
> - indent-check, fails if the tree isn't correctly indented
> - indent-diff, like indent-check, but also shows the diff
> 
> If we tought pgindent to emit the list of files it processes to a dependency
> file, we could make it cheap to call indent-check repeatedly, by teaching
> meson/ninja to not reinvoke it if the input files haven't changed.  Personally
> that'd make it more bearable to script indentation checks to happen
> frequently.
> 
> 
> I'll look into writing a command to update typedefs.list with all the local
> changes.

It turns out that updating the in-tree typedefs.list would be very noisy. On
my local linux system I get
 1 file changed, 422 insertions(+), 1 deletion(-)

On a mac mini I get
 1 file changed, 351 insertions(+), 1 deletion(-)

We could possibly address that by updating the in-tree typedefs.list a bit
more aggressively. Sure looks like the source systems are on the older side.


But in the attached patch I've implemented this slightly differently. If the
tooling to do so is available, the indent-* targets explained above,
use/depend on src/tools/pgindent/typedefs.list.merged (in the build dir),
which is the combination of a src/tools/pgindent/typedefs.list.local generated
for the local binaries/libraries and the source tree
src/tools/pgindent/typedefs.list.

src/tools/pgindent/typedefs.list.local is generated in fragments, with one
fragment for each build target. That way the whole file doesn't have to be
regenerated all the time, which can save a good bit of time (althoug obviously
less when hacking on the backend).

This makes it quite quick to locally indent, without needing to manually
fiddle around with manually modifying typedefs.list or using a separate
typedefs.list.


In a third commit I added a 'nitpick' configure time option, defaulting to
off, which runs an indentation check. The failure mode of that currently isn't
very helpful though, as it just uses --silent-diff.


All of this currently is meson only, largely because I don't feel like
spending the time messing with the configure build, particularly before there
is any agreement on this being the thing to do.

Greetings,

Andres Freund