Ban !=# and !=? from the codebase

autoload/ale.vim

@@ -58,7 +58,7 @@ function! ale#Queue(delay, ...) abort
 endfunction
 
 function! s:ALEQueueImpl(delay, linting_flag, buffer) abort
-    if a:linting_flag !=# '' && a:linting_flag !=# 'lint_file'
+    if a:linting_flag isnot# '' && a:linting_flag isnot# 'lint_file'
         throw "linting_flag must be either '' or 'lint_file'"
     endif
 

autoload/ale/cursor.vim

@@ -72,7 +72,7 @@ function! ale#cursor#EchoCursorWarning(...) abort
     endif
 
     " Only echo the warnings in normal mode, otherwise we will get problems.
-    if mode() !=# 'n'
+    if mode() isnot# 'n'
         return
     endif
 
@@ -118,7 +118,7 @@ function! ale#cursor#ShowCursorDetail() abort
     endif
 
     " Only echo the warnings in normal mode, otherwise we will get problems.
-    if mode() !=# 'n'
+    if mode() isnot# 'n'
         return
     endif
 

autoload/ale/engine.vim

@@ -128,14 +128,14 @@ function! s:HandleLoclist(linter_name, buffer, loclist) abort
 
     " Remove this linter from the list of active linters.
     " This may have already been done when the job exits.
-    call filter(l:buffer_info.active_linter_list, 'v:val !=# a:linter_name')
+    call filter(l:buffer_info.active_linter_list, 'v:val isnot# a:linter_name')
 
     " Make some adjustments to the loclists to fix common problems, and also
     " to set default values for loclist items.
     let l:linter_loclist = ale#engine#FixLocList(a:buffer, a:linter_name, a:loclist)
 
     " Remove previous items for this linter.
-    call filter(g:ale_buffer_info[a:buffer].loclist, 'v:val.linter_name !=# a:linter_name')
+    call filter(g:ale_buffer_info[a:buffer].loclist, 'v:val.linter_name isnot# a:linter_name')
     " Add the new items.
     call extend(g:ale_buffer_info[a:buffer].loclist, l:linter_loclist)
 
@@ -169,8 +169,8 @@ function! s:HandleExit(job_id, exit_code) abort
     " Remove this job from the list.
     call ale#job#Stop(a:job_id)
     call remove(s:job_info_map, a:job_id)
-    call filter(g:ale_buffer_info[l:buffer].job_list, 'v:val !=# a:job_id')
-    call filter(g:ale_buffer_info[l:buffer].active_linter_list, 'v:val !=# l:linter.name')
+    call filter(g:ale_buffer_info[l:buffer].job_list, 'v:val isnot# a:job_id')
+    call filter(g:ale_buffer_info[l:buffer].active_linter_list, 'v:val isnot# l:linter.name')
 
     " Stop here if we land in the handle for a job completing if we're in
     " a sandbox.

autoload/ale/fix.vim

@@ -335,7 +335,7 @@ function! ale#fix#Fix(...) abort
 
     let l:fixing_flag = get(a:000, 0, '')
 
-    if l:fixing_flag !=# '' && l:fixing_flag !=# 'save_file'
+    if l:fixing_flag isnot# '' && l:fixing_flag isnot# 'save_file'
         throw "fixing_flag must be either '' or 'save_file'"
     endif
 

autoload/ale/job.vim

@@ -161,7 +161,7 @@ function! ale#job#ParseVim8ProcessID(job_string) abort
 endfunction
 
 function! ale#job#ValidateArguments(command, options) abort
-    if a:options.mode !=# 'nl' && a:options.mode !=# 'raw'
+    if a:options.mode isnot# 'nl' && a:options.mode isnot# 'raw'
         throw 'Invalid mode: ' . a:options.mode
     endif
 endfunction

autoload/ale/linter.vim

@@ -60,8 +60,8 @@ function! ale#linter#PreProcess(linter) abort
     endif
 
     let l:needs_address = l:obj.lsp is# 'socket'
-    let l:needs_executable = l:obj.lsp !=# 'socket'
-    let l:needs_command = l:obj.lsp !=# 'socket'
+    let l:needs_executable = l:obj.lsp isnot# 'socket'
+    let l:needs_command = l:obj.lsp isnot# 'socket'
     let l:needs_lsp_details = !empty(l:obj.lsp)
 
     if empty(l:obj.lsp)
@@ -377,7 +377,7 @@ function! ale#linter#StartLSP(buffer, linter, callback) abort
     let l:address = ''
     let l:root = ale#util#GetFunction(a:linter.project_root_callback)(a:buffer)
 
-    if empty(l:root) && a:linter.lsp !=# 'tsserver'
+    if empty(l:root) && a:linter.lsp isnot# 'tsserver'
         " If there's no project root, then we can't check files with LSP,
         " unless we are using tsserver, which doesn't use project roots.
         return {}

autoload/ale/list.vim

@@ -62,7 +62,7 @@ function! ale#list#SetLists(buffer, loclist) abort
         endif
 
         " If focus changed, restore it (jump to the last window).
-        if l:winnr !=# winnr()
+        if l:winnr isnot# winnr()
             wincmd p
         endif
 

autoload/ale/lsp.vim

@@ -296,7 +296,7 @@ function! ale#lsp#ConnectToAddress(address, project_root, callback) abort
     " Get the current connection or a new one.
     let l:conn = !empty(l:conn) ? l:conn : s:NewConnection()
 
-    if !has_key(l:conn, 'channel') || ch_status(l:conn.channel) !=# 'open'
+    if !has_key(l:conn, 'channel') || ch_status(l:conn.channel) isnot# 'open'
         let l:conn.channnel = ch_open(a:address, {
         \   'mode': 'raw',
         \   'waittime': 0,

autoload/ale/ruby.vim

@@ -10,7 +10,7 @@ function! ale#ruby#FindRailsRoot(buffer) abort
         \   ':h:h'
         \)
 
-        if l:dir !=# '.'
+        if l:dir isnot# '.'
         \&& isdirectory(l:dir . '/app')
         \&& isdirectory(l:dir . '/config')
         \&& isdirectory(l:dir . '/db')

autoload/ale/sign.vim

@@ -40,7 +40,7 @@ if !hlexists('ALESignColumnWithoutErrors')
 
         if !empty(l:match)
             execute 'highlight link ALESignColumnWithoutErrors ' . l:match[1]
-        elseif l:highlight_syntax !=# 'cleared'
+        elseif l:highlight_syntax isnot# 'cleared'
             execute 'highlight ALESignColumnWithoutErrors ' . l:highlight_syntax
         endif
     endfunction

autoload/ale/test.vim

@@ -12,7 +12,7 @@
 "
 " This function should be run in a Vader Before: block.
 function! ale#test#SetDirectory(docker_path) abort
-    if a:docker_path[:len('/testplugin/') - 1] !=# '/testplugin/'
+    if a:docker_path[:len('/testplugin/') - 1] isnot# '/testplugin/'
         throw 'docker_path must start with /testplugin/!'
     endif
 

autoload/ale/util.vim

@@ -136,7 +136,7 @@ function! s:LoadArgCount(function) abort
     endif
 
     let l:match = matchstr(split(l:output, "\n")[0], '\v\([^)]+\)')[1:-2]
-    let l:arg_list = filter(split(l:match, ', '), 'v:val !=# ''...''')
+    let l:arg_list = filter(split(l:match, ', '), 'v:val isnot# ''...''')
 
     return len(l:arg_list)
 endfunction