Add g:ale_disable_lsp and b:ale_disable_lsp to disable linters powered by LSP

autoload/ale.vim

@@ -8,6 +8,7 @@ let g:ale_echo_msg_info_str = get(g:, 'ale_echo_msg_info_str', 'Info')
 let g:ale_echo_msg_warning_str = get(g:, 'ale_echo_msg_warning_str', 'Warning')
 " Ignoring linters, for disabling some, or ignoring LSP diagnostics.
 let g:ale_linters_ignore = get(g:, 'ale_linters_ignore', {})
+let g:ale_disable_lsp = get(g:, 'ale_disable_lsp', 0)
 
 let s:lint_timer = -1
 let s:getcmdwintype_exists = exists('*getcmdwintype')
@@ -90,8 +91,9 @@ function! s:Lint(buffer, should_lint_file, timer_id) abort
 
     " Apply ignore lists for linters only if needed.
     let l:ignore_config = ale#Var(a:buffer, 'linters_ignore')
+    let l:disable_lsp = ale#Var(a:buffer, 'disable_lsp')
     let l:linters = !empty(l:ignore_config)
-    \   ? ale#engine#ignore#Exclude(l:filetype, l:linters, l:ignore_config)
+    \   ? ale#engine#ignore#Exclude(l:filetype, l:linters, l:ignore_config, l:disable_lsp)
     \   : l:linters
 
     " Tell other sources that they can start checking the buffer now.

autoload/ale/engine/ignore.vim

@@ -22,7 +22,7 @@ function! ale#engine#ignore#GetList(filetype, config) abort
 endfunction
 
 " Given a List of linter descriptions, exclude the linters to be ignored.
-function! ale#engine#ignore#Exclude(filetype, all_linters, config) abort
+function! ale#engine#ignore#Exclude(filetype, all_linters, config, disable_lsp) abort
     let l:names_to_remove = ale#engine#ignore#GetList(a:filetype, a:config)
     let l:filtered_linters = []
 
@@ -37,6 +37,10 @@ function! ale#engine#ignore#Exclude(filetype, all_linters, config) abort
             endif
         endfor
 
+        if a:disable_lsp && has_key(l:linter, 'lsp') && l:linter.lsp isnot# ''
+            let l:should_include = 0
+        endif
+
         if l:should_include
             call add(l:filtered_linters, l:linter)
         endif

doc/ale.txt

@@ -1587,6 +1587,15 @@ g:ale_windows_node_executable_path         *g:ale_windows_node_executable_path*
   setting.
 
 
+g:ale_disable_lsp                                            *g:ale_disable_lsp*
+                                                             *b:ale_disable_lsp*
+
+  Type: |Number|
+  Default: `0`
+
+  When this option is set to `1`, ALE ignores all linters powered by LSP.
+  Please see also |ale-lsp|.
+
 -------------------------------------------------------------------------------
 6.1. Highlights                                                *ale-highlights*
 

test/test_ignoring_linters.vader

@@ -30,6 +30,7 @@ Execute(Exclude should ignore some invalid values):
   \     {'name': 'linter3', 'aliases': []},
   \   ],
   \   'foo',
+  \   0,
   \ )
   AssertEqual
   \ [
@@ -45,6 +46,7 @@ Execute(Exclude should ignore some invalid values):
   \     {'name': 'linter3', 'aliases': []},
   \   ],
   \   0,
+  \   0,
   \ )
   AssertEqual
   \ [
@@ -60,6 +62,7 @@ Execute(Exclude should ignore some invalid values):
   \     {'name': 'linter3', 'aliases': []},
   \   ],
   \   v:null,
+  \   0,
   \ )
 
 Execute(Exclude should handle Lists):
@@ -75,6 +78,7 @@ Execute(Exclude should handle Lists):
   \     {'name': 'linter3', 'aliases': []},
   \   ],
   \   ['linter1', 'alias1'],
+  \   0,
   \ )
 
 Execute(Exclude should handle Dictionaries):
@@ -90,11 +94,51 @@ Execute(Exclude should handle Dictionaries):
   \     {'name': 'linter3', 'aliases': []},
   \   ],
   \   {'foo': ['linter1'], 'bar': ['alias1']},
+  \   0,
+  \ )
+
+Execute(Exclude should filter LSP linters when g:ale_disable_lsp is set to 1):
+  let g:ale_disable_lsp = 1
+  AssertEqual
+  \ [
+  \   {'name': 'linter1', 'aliases': [], 'lsp': ''},
+  \   {'name': 'linter2', 'aliases': []},
+  \ ],
+  \ ale#engine#ignore#Exclude(
+  \   'foo',
+  \   [
+  \       {'name': 'linter1', 'aliases': [], 'lsp': ''},
+  \       {'name': 'linter2', 'aliases': []},
+  \       {'name': 'linter3', 'aliases': [], 'lsp': 'stdio'},
+  \   ],
+  \   [],
+  \   1,
+  \ )
+
+Execute(Exclude should filter LSP linters when b:ale_disable_lsp is set to 1):
+  let b:ale_disable_lsp = 1
+  AssertEqual
+  \ [
+  \   {'name': 'linter1', 'aliases': [], 'lsp': ''},
+  \   {'name': 'linter2', 'aliases': []},
+  \ ],
+  \ ale#engine#ignore#Exclude(
+  \   'foo',
+  \   [
+  \       {'name': 'linter1', 'aliases': [], 'lsp': ''},
+  \       {'name': 'linter2', 'aliases': []},
+  \       {'name': 'linter3', 'aliases': [], 'lsp': 'stdio'},
+  \   ],
+  \   [],
+  \   1,
   \ )
 
 Before:
   Save g:ale_linters_ignore
   Save g:ale_buffer_info
+  Save g:ale_disable_lsp
+
+  let g:ale_disable_lsp = 0
 
   let g:linters = []
   let g:loclist = []
@@ -127,6 +171,7 @@ After:
   unlet! b:ale_linters_ignore
   unlet! b:ale_quitting
   unlet! b:ale_save_event_fired
+  unlet! b:ale_disable_lsp
   unlet! g:linters
   unlet! g:loclist
   unlet! g:lsp_message