Run before lint cycle, rename autocmds

README.md

@@ -497,14 +497,14 @@ Will give you:
 
 ALE runs its own [autocmd](http://vimdoc.sourceforge.net/htmldoc/autocmd.html)
 events whenever has a linter is started and has been successfully executed and
-processed. This autocmd event can be used to call arbitrary functions before and
+processed. These events can be used to call arbitrary functions before and after
-after ALE stops linting.
+ALE stops linting.
 
 ```vim
 augroup YourGroup
     autocmd!
-    autocmd User ALEStartLint call YourFunction()
+    autocmd User ALELintPre  call YourFunction()
-    autocmd User ALELint call YourFunction()
+    autocmd User ALELintPost call YourFunction()
 augroup END
 ```
 

autoload/ale/engine.vim

@@ -321,6 +321,8 @@ function! ale#engine#SetResults(buffer, loclist) abort
         call ale#engine#RemoveManagedFiles(a:buffer)
 
         " Call user autocommands. This allows users to hook into ALE's lint cycle.
+        silent doautocmd <nomodeline> User ALELintPost
+        " Old DEPRECATED name; call it for backwards compatibility.
         silent doautocmd <nomodeline> User ALELint
     endif
 endfunction
@@ -556,8 +558,6 @@ function! s:RunJob(options) abort
         \   'output': [],
         \   'next_chain_index': l:next_chain_index,
         \}
-
-        silent doautocmd <nomodeline> User ALEStartLint
     endif
 
     if g:ale_history_enabled
@@ -787,6 +787,8 @@ function! ale#engine#RunLinters(buffer, linters, should_lint_file) abort
     " We can only clear the results if we aren't checking the buffer.
     let l:can_clear_results = !ale#engine#IsCheckingBuffer(a:buffer)
 
+    silent doautocmd <nomodeline> User ALELintPre
+
     for l:linter in a:linters
         " Only run lint_file linters if we should.
         if !l:linter.lint_file || a:should_lint_file

doc/ale.txt

@@ -2048,7 +2048,7 @@ ale#linter#Define(filetype, linter)                       *ale#linter#Define()*
                          the file on disk, including |g:ale_lint_on_enter|
                          and |g:ale_lint_on_save|. Linters with this option
                          set to `1` will also be run when linters are run
-                         manually, per |ALELint-autocmd|.
+                         manually, per |ALELintPost-autocmd|.
 
                          When this option is set to `1`, `read_buffer` will
                          be set automatically to `0`. The two options cannot
@@ -2182,26 +2182,32 @@ ale#statusline#Count(buffer)                           *ale#statusline#Count()*
   `total`         -> The total number of problems.
 
 
-ALELint                                                       *ALELint-autocmd*
+ALELintPre ALELintPost                 *ALELintPre-autocmd* *ALELintPost-autocmd*
 
-  This |User| autocommand is triggered by ALE every time it completes a lint
+  These |User| autocommands are triggered before and after every lint cycle.
-  cycle. It can be used to update statuslines, send notifications, or
+  It can be used to update statuslines, send notifications, etc.
-  complete any other operation that needs to be done after linting has been
-  performed.
-
-  For example, you can echo a message when linting is complete like so:
-  >
-  autocmd User ALELint unsilent echom 'ALE run!'
-<
   The autocmd commands are run with |:silent|, so |:unsilent| is required for
   echoing messges.
 
-
+  For example to change the color of the statusline while the linter is
-ALEStartLint                                             *ALEStartLint-autocmd*
+  running:
-
+>
-  This |User| autocommand is triggered by ALE right after it started a new
+    augroup ALEProgress
-  linting job.
+        autocmd!
-
+        autocmd User ALELintPre  hi Statusline ctermfg=darkgrey
+        autocmd User ALELintPOST hi Statusline ctermfg=NONE
+    augroup end
+<
+  Or to display the progress in the statusline:
+>
+    let s:ale_running = 0
+    let l:stl .= '%{s:ale_running ? "[linting]" : ""}'
+    augroup ALEProgress
+        autocmd!
+        autocmd User ALELintPre  let s:ale_running = 1 | redrawstatus
+        autocmd User ALELintPost let s:ale_running = 0 | redrawstatus
+    augroup end
+<
 ===============================================================================
 10. Special Thanks                                         *ale-special-thanks*
 

test/test_alelint_autocmd.vader

@@ -1,41 +1,21 @@
 Before:
-  let g:start = 0
+  let g:pre_success = 0
-  let g:success = 0
+  let g:post_success = 0
   let g:ale_run_synchronously = 1
 
-  function! TestCallback(buffer, output)
-    return [{
-    \ 'lnum': 1,
-    \ 'col': 3,
-    \ 'text': 'baz boz',
-    \}]
-  endfunction
-
-  call ale#linter#Define('foobar', {
-  \ 'name': 'testlinter',
-  \ 'callback': 'TestCallback',
-  \ 'executable': has('win32') ? 'cmd' : 'true',
-  \ 'command': has('win32') ? 'echo' : 'true',
-  \})
-  "let g:ale_linters = {'foobar': ['lint_file_linter']}
-
 After:
   let g:ale_run_synchronously = 0
   let g:ale_buffer_info = {}
-  let g:ale_linters = {}
-  call ale#linter#Reset()
-  delfunction TestCallback
   augroup! VaderTest
 
 Execute (Run a lint cycle, and check that a variable is set in the autocmd):
-  set filetype=foobar
   augroup VaderTest
     autocmd!
-    autocmd User ALEStartLint let g:start = 1
+    autocmd User ALELintPre let g:pre_success = 1
-    autocmd User ALELint      let g:success = 1
+    autocmd User ALELintPost let g:post_success = 1
   augroup end
 
   call ale#Lint()
 
-  AssertEqual g:start, 1
+  AssertEqual g:pre_success, 1
-  AssertEqual g:success, 1
+  AssertEqual g:post_success, 1