closes: vim/vim#16854

https://github.com/vim/vim/commit/4fa2dd2405a8d11bf1d1cb3553adb6fba53dc19f

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

closes: vim/vim#16853

https://github.com/vim/vim/commit/23473303b78d598a0f3c2f9370e011045093d3bd

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

closes: vim/vim#16749

https://github.com/vim/vim/commit/3d75ec7401850e8a80ae7ab5ad1b84f47bc32095

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

closes: vim/vim#16704

https://github.com/vim/vim/commit/d15114c148e615b0c244e94bf91548299f6af047

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

Problem:  SpotBugs compiler can be further improved
Solution: Introduce event-driven primitives for SpotBugs
          (Aliaksei Budavei)

closes: vim/vim#16258

https://github.com/vim/vim/commit/2e252474c4df5018b9819d86ebb70bf3b1b1a1af

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>

Problem:  SpotBugs compiler can be improved
Solution: runtime(compiler): Improve defaults and error handling for
          SpotBugs; update test_compiler.vim (Aliaksei Budavei)

runtime(compiler): Improve defaults and error handling for SpotBugs

* Keep "spotbugs#DefaultPreCompilerTestAction()" defined but
  do not assign its Funcref to the "PreCompilerTestAction"
  key of "g:spotbugs_properties": there are no default and
  there can only be introduced arbitrary "*sourceDirPath"
  entries; therefore, this assignment is confusing at best,
  given that the function's implementation delegates to
  whatever "PreCompilerAction" is.

* Allow for the possibility of relative source pathnames
  passed as arguments to Vim for the Javac default actions,
  and the necessity to have them properly reconciled when
  the current working directory is changed.

* Do not expect users to remember or know that new source
  files ‘must be’ ":argadd"'d to be then known to the Javac
  default actions; so collect the names of Java-file buffers
  and Java-file Vim arguments; and let users providing the
  "@sources" file-lists in the "g:javac_makeprg_params"
  variable update these file-lists themselves.

* Strive to not leave behind a fire-once Syntax ":autocmd"
  for a Java buffer whenever an arbitrary pre-compile action
  errors out.

* Only attempt to run a post-compiler action in the absence
  of failures for a pre-compiler action.  Note that warnings
  and failures are treated alike (?!) by the Javac compiler,
  so when previews are tried out with "--enable-preview",
  remember about passing "-Xlint:-preview" too to also let
  SpotBugs have a go.

* Properly group conditional operators when testing for key
  entries in a user-defined variable.

* Also test whether "javaExternal" is defined when choosing
  an implementation for source-file parsing.

* Two commands are provided to toggle actions for buffer-local
  autocommands:
  - SpotBugsRemoveBufferAutocmd;
  - SpotBugsDefineBufferAutocmd.

For example, try this from "~/.vim/after/ftplugin/java.vim":
------------------------------------------------------------
if exists(':SpotBugsDefineBufferAutocmd') == 2
	SpotBugsDefineBufferAutocmd BufWritePost SigUSR1
endif
------------------------------------------------------------

And ":doautocmd java_spotbugs User" can be manually used at will.

closes: vim/vim#16140

https://github.com/vim/vim/commit/368ef5a48c7a41af7fe2c32a5d5659e23aff63d0

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>

See @saccarosium 's suggestion at
https://github.com/vim/vim/pull/16311#issuecomment-2563447885

closes: vim/vim#16314

https://github.com/vim/vim/commit/6c57c30ad43f5e0d040f7d432ceb5d61fc6ab651

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

closes: vim/vim#16192

https://github.com/vim/vim/commit/b66cac1a8ed8636a38e867226f5bb621c96ff322

Co-authored-by: Luca Saccarola <github.e41mv@aleeas.com>

Problem:  runtime(compiler): pytest compiler not included
Solution: include pytest compiler, update the compiler completion test
          (Konfekt)

closes: vim/vim#16130

https://github.com/vim/vim/commit/3c2596a9e967910143d41fbb9615614ab36d43a7

Co-authored-by: Konfekt <Konfekt@users.noreply.github.com>

compact formatter is no longer distributed with eslint, so:

- switch to '--format stylish' in makeprg
- update 'errorformat' for the 'stylish' format output

fixes: vim/vim#16126
closes: vim/vim#16137

https://github.com/vim/vim/commit/dd21c8962680ba726ac1bf78ae106a4b6071450f

Co-authored-by: Romain Lafourcade <romainlafourcade@gmail.com>