Ban !=# and !=? from the codebase

ale_linters/dockerfile/hadolint.vim

@@ -14,7 +14,7 @@ function! ale_linters#dockerfile#hadolint#Handle(buffer, lines) abort
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
         let l:lnum = 0
 
-        if l:match[1] !=# ''
+        if l:match[1] isnot# ''
             let l:lnum = l:match[1] + 0
         endif
 

ale_linters/elm/make.vim

@@ -31,7 +31,7 @@ function! ale_linters#elm#make#Handle(buffer, lines) abort
                     \})
                 endif
             endfor
-        elseif l:line !=# 'Successfully generated /dev/null'
+        elseif l:line isnot# 'Successfully generated /dev/null'
             call add(l:unparsed_lines, l:line)
         endif
     endfor

ale_linters/kotlin/kotlinc.vim

@@ -13,7 +13,7 @@ let s:classpath_sep = has('unix') ? ':' : ';'
 
 function! ale_linters#kotlin#kotlinc#GetImportPaths(buffer) abort
     " exec maven/gradle only if classpath is not set
-    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') !=# ''
+    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') isnot# ''
         return ''
     else
         let l:pom_path = ale#path#FindNearestFile(a:buffer, 'pom.xml')
@@ -70,7 +70,7 @@ function! ale_linters#kotlin#kotlinc#GetCommand(buffer, import_paths) abort
     endif
 
     " We only get here if not using module or the module file not readable
-    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') !=# ''
+    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') isnot# ''
         let l:kotlinc_opts .= ' -cp ' . ale#Var(a:buffer, 'kotlin_kotlinc_classpath')
     else
         " get classpath from maven/gradle
@@ -78,7 +78,7 @@ function! ale_linters#kotlin#kotlinc#GetCommand(buffer, import_paths) abort
     endif
 
     let l:fname = ''
-    if ale#Var(a:buffer, 'kotlin_kotlinc_sourcepath') !=# ''
+    if ale#Var(a:buffer, 'kotlin_kotlinc_sourcepath') isnot# ''
         let l:fname .= expand(ale#Var(a:buffer, 'kotlin_kotlinc_sourcepath'), 1) . ' '
     else
         " Find the src directory for files in this project.
@@ -121,7 +121,7 @@ function! ale_linters#kotlin#kotlinc#Handle(buffer, lines) abort
         let l:curbuf_abspath = expand('#' . a:buffer . ':p')
 
         " Skip if file is not loaded
-        if l:buf_abspath !=# l:curbuf_abspath
+        if l:buf_abspath isnot# l:curbuf_abspath
             continue
         endif
         let l:type_marker_str = l:type is# 'warning' ? 'W' : 'E'

ale_linters/nim/nimcheck.vim

@@ -12,7 +12,7 @@ function! ale_linters#nim#nimcheck#Handle(buffer, lines) abort
         "       module names.
 
         let l:temp_buffer_filename = fnamemodify(l:match[1], ':p:t')
-        if l:buffer_filename !=# '' && l:temp_buffer_filename !=# l:buffer_filename
+        if l:buffer_filename isnot# '' && l:temp_buffer_filename isnot# l:buffer_filename
             continue
         endif
 

ale_linters/perl/perl.vim

@@ -34,7 +34,7 @@ function! ale_linters#perl#perl#Handle(buffer, lines) abort
 
         if ale#path#IsBufferPath(a:buffer, l:match[2])
         \ && (
-        \   l:text !=# 'BEGIN failed--compilation aborted'
+        \   l:text isnot# 'BEGIN failed--compilation aborted'
         \   || empty(l:output)
         \   || match(l:output[-1].text, s:begin_failed_skip_pattern) < 0
         \ )

ale_linters/perl/perlcritic.vim

@@ -41,10 +41,10 @@ function! ale_linters#perl#perlcritic#GetCommand(buffer) abort
     let l:command = ale#Escape(ale_linters#perl#perlcritic#GetExecutable(a:buffer))
     \   . " --verbose '". l:critic_verbosity . "' --nocolor"
 
-    if l:profile !=? ''
+    if l:profile isnot? ''
         let l:command .= ' --profile ' . ale#Escape(l:profile)
     endif
-    if l:options !=? ''
+    if l:options isnot? ''
         let l:command .= ' ' . l:options
     endif
 

ale_linters/python/mypy.vim

@@ -37,7 +37,7 @@ function! ale_linters#python#mypy#Handle(buffer, lines) abort
     let l:buffer_filename = expand('#' . a:buffer . ':p')
 
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
-        if l:buffer_filename[-len(l:match[1]):] !=# l:match[1]
+        if l:buffer_filename[-len(l:match[1]):] isnot# l:match[1]
             continue
         endif
 

ale_linters/rust/cargo.vim

@@ -4,7 +4,7 @@
 let g:ale_rust_cargo_use_check = get(g:, 'ale_rust_cargo_use_check', 0)
 
 function! ale_linters#rust#cargo#GetCargoExecutable(bufnr) abort
-    if ale#path#FindNearestFile(a:bufnr, 'Cargo.toml') !=# ''
+    if ale#path#FindNearestFile(a:bufnr, 'Cargo.toml') isnot# ''
         return 'cargo'
     else
         " if there is no Cargo.toml file, we don't use cargo even if it exists,

ale_linters/rust/rustc.vim

@@ -7,7 +7,7 @@ function! ale_linters#rust#rustc#RustcCommand(buffer_number) abort
     " <project root>/target/release/deps/
     let l:cargo_file = ale#path#FindNearestFile(a:buffer_number, 'Cargo.toml')
 
-    if l:cargo_file !=# ''
+    if l:cargo_file isnot# ''
         let l:project_root = fnamemodify(l:cargo_file, ':h')
         let l:dependencies = '-L ' . l:project_root . '/target/debug/deps -L ' .
         \   l:project_root . '/target/release/deps'