Updated plugins

sources_non_forked/ale/ale_linters/ada/gcc.vim

@@ -12,7 +12,7 @@ function! ale_linters#ada#gcc#GetCommand(buffer) abort
     " the .ali file may be created even if no code generation is attempted.
     " The output file name must match the source file name (except for the
     " extension), so here we cannot use the null file as output.
-    let l:tmp_dir = fnamemodify(ale#engine#CreateDirectory(a:buffer), ':p')
+    let l:tmp_dir = fnamemodify(ale#command#CreateDirectory(a:buffer), ':p')
     let l:out_file = l:tmp_dir . fnamemodify(bufname(a:buffer), ':t:r') . '.o'
 
     " -gnatc: Check syntax and semantics only (no code generation attempted)
@@ -48,7 +48,7 @@ endfunction
 call ale#linter#Define('ada', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('ada_gcc_executable'),
-\   'command_callback': 'ale_linters#ada#gcc#GetCommand',
+\   'executable': {b -> ale#Var(b, 'ada_gcc_executable')},
+\   'command': function('ale_linters#ada#gcc#GetCommand'),
 \   'callback': 'ale_linters#ada#gcc#Handle',
 \})

sources_non_forked/ale/ale_linters/ansible/ansible_lint.vim

@@ -50,7 +50,7 @@ endfunction
 call ale#linter#Define('ansible', {
 \   'name': 'ansible_lint',
 \   'aliases': ['ansible', 'ansible-lint'],
-\   'executable_callback': 'ale_linters#ansible#ansible_lint#GetExecutable',
+\   'executable': function('ale_linters#ansible#ansible_lint#GetExecutable'),
 \   'command': '%e -p %t',
 \   'callback': 'ale_linters#ansible#ansible_lint#Handle',
 \})

sources_non_forked/ale/ale_linters/asciidoc/alex.vim

@@ -1,11 +1,4 @@
 " Author: Johannes Wienke <languitar@semipol.de>
 " Description: alex for asciidoc files
 
-call ale#linter#Define('help', {
-\   'name': 'alex',
-\   'executable': 'alex',
-\   'command': 'alex %s -t',
-\   'output_stream': 'stderr',
-\   'callback': 'ale#handlers#alex#Handle',
-\   'lint_file': 1,
-\})
+call ale#handlers#alex#DefineLinter('asciidoc', '--text')

sources_non_forked/ale/ale_linters/asm/gcc.vim

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('asm', {
 \    'name': 'gcc',
 \    'output_stream': 'stderr',
-\    'executable_callback': ale#VarFunc('asm_gcc_executable'),
-\    'command_callback': 'ale_linters#asm#gcc#GetCommand',
+\    'executable': {b -> ale#Var(b, 'asm_gcc_executable')},
+\    'command': function('ale_linters#asm#gcc#GetCommand'),
 \    'callback': 'ale_linters#asm#gcc#Handle',
 \})

sources_non_forked/ale/ale_linters/awk/gawk.vim

@@ -15,8 +15,8 @@ endfunction
 
 call ale#linter#Define('awk', {
 \   'name': 'gawk',
-\   'executable_callback': ale#VarFunc('awk_gawk_executable'),
-\   'command_callback': 'ale_linters#awk#gawk#GetCommand',
+\   'executable': {b -> ale#Var(b, 'awk_gawk_executable')},
+\   'command': function('ale_linters#awk#gawk#GetCommand'),
 \   'callback': 'ale#handlers#gawk#HandleGawkFormat',
 \   'output_stream': 'both'
 \})

sources_non_forked/ale/ale_linters/bib/bibclean.vim

@@ -11,9 +11,9 @@ endfunction
 
 function! ale_linters#bib#bibclean#get_type(str) abort
     if a:str is# '??'
-       return 'E'
+        return 'E'
     else
-       return 'W'
+        return 'W'
     endif
 endfunction
 
@@ -36,30 +36,31 @@ function! ale_linters#bib#bibclean#Handle(buffer, lines) abort
     let l:msg  = ''
 
     for l:line in a:lines
-      if empty(l:msg)
-          let l:mlist = ale_linters#bib#bibclean#match_msg(l:line)
+        if empty(l:msg)
+            let l:mlist = ale_linters#bib#bibclean#match_msg(l:line)
 
-          if !empty(l:mlist)
-              let l:msg = l:mlist[3]
-              let l:type = ale_linters#bib#bibclean#get_type(l:mlist[1])
-          endif
-      else
-          if l:type is# 'E'
-               let l:mlist = ale_linters#bib#bibclean#match_entry(l:line)
-          else
-               let l:mlist = ale_linters#bib#bibclean#match_value(l:line)
-          endif
+            if !empty(l:mlist)
+                let l:msg = l:mlist[3]
+                let l:type = ale_linters#bib#bibclean#get_type(l:mlist[1])
+            endif
+        else
+            if l:type is# 'E'
+                let l:mlist = ale_linters#bib#bibclean#match_entry(l:line)
+            else
+                let l:mlist = ale_linters#bib#bibclean#match_value(l:line)
+            endif
 
-          if !empty(l:mlist)
-            call add(l:output, {
-              \ 'lnum': l:mlist[1],
-              \ 'col': l:mlist[2],
-              \ 'text': l:msg,
-              \ 'type': l:type
-              \})
-             let l:msg = ''
-          endif
-      endif
+            if !empty(l:mlist)
+                call add(l:output, {
+                \ 'lnum': l:mlist[1],
+                \ 'col': l:mlist[2],
+                \ 'text': l:msg,
+                \ 'type': l:type
+                \})
+
+                let l:msg = ''
+            endif
+        endif
     endfor
 
     return l:output
@@ -67,8 +68,8 @@ endfunction
 
 call ale#linter#Define('bib', {
 \   'name': 'bibclean',
-\   'executable_callback': ale#VarFunc('bib_bibclean_executable'),
-\   'command_callback': 'ale_linters#bib#bibclean#GetCommand',
+\   'executable': {b -> ale#Var(b, 'bib_bibclean_executable')},
+\   'command': function('ale_linters#bib#bibclean#GetCommand'),
 \   'output_stream': 'stderr',
 \   'callback': 'ale_linters#bib#bibclean#Handle',
 \})

sources_non_forked/ale/ale_linters/c/ccls.vim

@@ -7,8 +7,8 @@ call ale#Set('c_ccls_init_options', {})
 call ale#linter#Define('c', {
 \   'name': 'ccls',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('c_ccls_executable'),
+\   'executable': {b -> ale#Var(b, 'c_ccls_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale#handlers#ccls#GetProjectRoot',
-\   'initialization_options_callback':ale#VarFunc('c_ccls_init_options'),
+\   'project_root': function('ale#handlers#ccls#GetProjectRoot'),
+\   'initialization_options': {b -> ale#Var(b, 'c_ccls_init_options')},
 \})

sources_non_forked/ale/ale_linters/c/clang.vim

@@ -18,7 +18,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('c_clang_executable'),
+\   'executable': {b -> ale#Var(b, 'c_clang_executable')},
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#c#clang#GetCommand'}

sources_non_forked/ale/ale_linters/c/clangd.vim

@@ -17,7 +17,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangd',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('c_clangd_executable'),
-\   'command_callback': 'ale_linters#c#clangd#GetCommand',
-\   'project_root_callback': 'ale_linters#c#clangd#GetProjectRoot',
+\   'executable': {b -> ale#Var(b, 'c_clangd_executable')},
+\   'command': function('ale_linters#c#clangd#GetCommand'),
+\   'project_root': function('ale_linters#c#clangd#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/c/clangtidy.vim

@@ -35,8 +35,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable_callback': ale#VarFunc('c_clangtidy_executable'),
-\   'command_callback': 'ale_linters#c#clangtidy#GetCommand',
+\   'executable': {b -> ale#Var(b, 'c_clangtidy_executable')},
+\   'command': function('ale_linters#c#clangtidy#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/c/cppcheck.vim

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable_callback': ale#VarFunc('c_cppcheck_executable'),
-\   'command_callback': 'ale_linters#c#cppcheck#GetCommand',
+\   'executable': {b -> ale#Var(b, 'c_cppcheck_executable')},
+\   'command': function('ale_linters#c#cppcheck#GetCommand'),
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

sources_non_forked/ale/ale_linters/c/cquery.vim

@@ -21,8 +21,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('c_cquery_executable'),
+\   'executable': {b -> ale#Var(b, 'c_cquery_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale_linters#c#cquery#GetProjectRoot',
-\   'initialization_options_callback': 'ale_linters#c#cquery#GetInitializationOptions',
+\   'project_root': function('ale_linters#c#cquery#GetProjectRoot'),
+\   'initialization_options': function('ale_linters#c#cquery#GetInitializationOptions'),
 \})

sources_non_forked/ale/ale_linters/c/flawfinder.vim

@@ -7,19 +7,19 @@ call ale#Set('c_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
 function! ale_linters#c#flawfinder#GetCommand(buffer) abort
-   " Set the minimum vulnerability level for flawfinder to bother with
-   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
+    " Set the minimum vulnerability level for flawfinder to bother with
+    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
 
-   return '%e -CDQS'
-   \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
-   \  . l:minlevel
-   \  . ' %t'
+    return '%e -CDQS'
+    \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
+    \  . l:minlevel
+    \  . ' %t'
 endfunction
 
 call ale#linter#Define('c', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': ale#VarFunc('c_flawfinder_executable'),
-\  'command_callback': 'ale_linters#c#flawfinder#GetCommand',
+\  'executable': {b -> ale#Var(b, 'c_flawfinder_executable')},
+\  'command': function('ale_linters#c#flawfinder#GetCommand'),
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

sources_non_forked/ale/ale_linters/c/gcc.vim

@@ -18,7 +18,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('c_gcc_executable'),
+\   'executable': {b -> ale#Var(b, 'c_gcc_executable')},
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#c#gcc#GetCommand'}

sources_non_forked/ale/ale_linters/chef/foodcritic.vim

@@ -34,8 +34,8 @@ endfunction
 
 call ale#linter#Define('chef', {
 \   'name': 'foodcritic',
-\   'executable_callback': ale#VarFunc('chef_foodcritic_executable'),
-\   'command_callback': 'ale_linters#chef#foodcritic#GetCommand',
+\   'executable': {b -> ale#Var(b, 'chef_foodcritic_executable')},
+\   'command': function('ale_linters#chef#foodcritic#GetCommand'),
 \   'callback': 'ale_linters#chef#foodcritic#Handle',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/clojure/joker.vim

@@ -11,7 +11,7 @@ function! ale_linters#clojure#joker#HandleJokerFormat(buffer, lines) abort
         let l:type = 'E'
 
         if l:match[4] is? 'Parse warning'
-          let l:type = 'W'
+            let l:type = 'W'
         endif
 
         call add(l:output, {

sources_non_forked/ale/ale_linters/cmake/cmakelint.vim

@@ -18,7 +18,7 @@ endfunction
 
 call ale#linter#Define('cmake', {
 \   'name': 'cmakelint',
-\   'executable_callback': 'ale_linters#cmake#cmakelint#Executable',
-\   'command_callback': 'ale_linters#cmake#cmakelint#Command',
+\   'executable': function('ale_linters#cmake#cmakelint#Executable'),
+\   'command': function('ale_linters#cmake#cmakelint#Command'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

sources_non_forked/ale/ale_linters/coffee/coffee.vim

@@ -16,8 +16,8 @@ endfunction
 
 call ale#linter#Define('coffee', {
 \   'name': 'coffee',
-\   'executable_callback': 'ale_linters#coffee#coffee#GetExecutable',
-\   'command_callback': 'ale_linters#coffee#coffee#GetCommand',
+\   'executable': function('ale_linters#coffee#coffee#GetExecutable'),
+\   'command': function('ale_linters#coffee#coffee#GetCommand'),
 \   'output_stream': 'stderr',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \})

sources_non_forked/ale/ale_linters/coffee/coffeelint.vim

@@ -37,7 +37,7 @@ endfunction
 
 call ale#linter#Define('coffee', {
 \   'name': 'coffeelint',
-\   'executable_callback': 'ale_linters#coffee#coffeelint#GetExecutable',
-\   'command_callback': 'ale_linters#coffee#coffeelint#GetCommand',
+\   'executable': function('ale_linters#coffee#coffeelint#GetExecutable'),
+\   'command': function('ale_linters#coffee#coffeelint#GetCommand'),
 \   'callback': 'ale_linters#coffee#coffeelint#Handle',
 \})

sources_non_forked/ale/ale_linters/cpp/ccls.vim

@@ -7,8 +7,8 @@ call ale#Set('cpp_ccls_init_options', {})
 call ale#linter#Define('cpp', {
 \   'name': 'ccls',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('cpp_ccls_executable'),
+\   'executable': {b -> ale#Var(b, 'cpp_ccls_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale#handlers#ccls#GetProjectRoot',
-\   'initialization_options_callback': ale#VarFunc('cpp_ccls_init_options'),
+\   'project_root': function('ale#handlers#ccls#GetProjectRoot'),
+\   'initialization_options': {b -> ale#Var(b, 'cpp_ccls_init_options')},
 \})

sources_non_forked/ale/ale_linters/cpp/clang.vim

@@ -18,7 +18,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cpp_clang_executable'),
+\   'executable': {b -> ale#Var(b, 'cpp_clang_executable')},
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#cpp#clang#GetCommand'},

sources_non_forked/ale/ale_linters/cpp/clangcheck.vim

@@ -27,8 +27,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangcheck',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cpp_clangcheck_executable'),
-\   'command_callback': 'ale_linters#cpp#clangcheck#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cpp_clangcheck_executable')},
+\   'command': function('ale_linters#cpp#clangcheck#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/cpp/clangd.vim

@@ -17,7 +17,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangd',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('cpp_clangd_executable'),
-\   'command_callback': 'ale_linters#cpp#clangd#GetCommand',
-\   'project_root_callback': 'ale_linters#cpp#clangd#GetProjectRoot',
+\   'executable': {b -> ale#Var(b, 'cpp_clangd_executable')},
+\   'command': function('ale_linters#cpp#clangd#GetCommand'),
+\   'project_root': function('ale_linters#cpp#clangd#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/cpp/clangtidy.vim

@@ -29,8 +29,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable_callback': ale#VarFunc('cpp_clangtidy_executable'),
-\   'command_callback': 'ale_linters#cpp#clangtidy#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cpp_clangtidy_executable')},
+\   'command': function('ale_linters#cpp#clangtidy#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/cpp/clazy.vim

@@ -25,8 +25,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clazy',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cpp_clazy_executable'),
-\   'command_callback': 'ale_linters#cpp#clazy#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cpp_clazy_executable')},
+\   'command': function('ale_linters#cpp#clazy#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/cpp/cppcheck.vim

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable_callback': ale#VarFunc('cpp_cppcheck_executable'),
-\   'command_callback': 'ale_linters#cpp#cppcheck#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cpp_cppcheck_executable')},
+\   'command': function('ale_linters#cpp#cppcheck#GetCommand'),
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

sources_non_forked/ale/ale_linters/cpp/cpplint.vim

@@ -13,8 +13,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cpplint',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cpp_cpplint_executable'),
-\   'command_callback': 'ale_linters#cpp#cpplint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cpp_cpplint_executable')},
+\   'command': function('ale_linters#cpp#cpplint#GetCommand'),
 \   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/cpp/cquery.vim

@@ -21,8 +21,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('cpp_cquery_executable'),
+\   'executable': {b -> ale#Var(b, 'cpp_cquery_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale_linters#cpp#cquery#GetProjectRoot',
-\   'initialization_options_callback': 'ale_linters#cpp#cquery#GetInitializationOptions',
+\   'project_root': function('ale_linters#cpp#cquery#GetProjectRoot'),
+\   'initialization_options': function('ale_linters#cpp#cquery#GetInitializationOptions'),
 \})

sources_non_forked/ale/ale_linters/cpp/flawfinder.vim

@@ -7,19 +7,19 @@ call ale#Set('cpp_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
 function! ale_linters#cpp#flawfinder#GetCommand(buffer) abort
-   " Set the minimum vulnerability level for flawfinder to bother with
-   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
+    " Set the minimum vulnerability level for flawfinder to bother with
+    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
 
-   return '%e -CDQS'
-   \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
-   \  . l:minlevel
-   \  . ' %t'
+    return '%e -CDQS'
+    \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
+    \  . l:minlevel
+    \  . ' %t'
 endfunction
 
 call ale#linter#Define('cpp', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': ale#VarFunc('cpp_flawfinder_executable'),
-\  'command_callback': 'ale_linters#cpp#flawfinder#GetCommand',
+\  'executable': {b -> ale#Var(b, 'cpp_flawfinder_executable')},
+\  'command': function('ale_linters#cpp#flawfinder#GetCommand'),
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

sources_non_forked/ale/ale_linters/cpp/gcc.vim

@@ -19,7 +19,7 @@ call ale#linter#Define('cpp', {
 \   'name': 'gcc',
 \   'aliases': ['g++'],
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cpp_gcc_executable'),
+\   'executable': {b -> ale#Var(b, 'cpp_gcc_executable')},
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#cpp#gcc#GetCommand'},

sources_non_forked/ale/ale_linters/crystal/crystal.vim

@@ -26,6 +26,6 @@ call ale#linter#Define('crystal', {
 \   'executable': 'crystal',
 \   'output_stream': 'both',
 \   'lint_file': 1,
-\   'command_callback': 'ale_linters#crystal#crystal#GetCommand',
+\   'command': function('ale_linters#crystal#crystal#GetCommand'),
 \   'callback': 'ale_linters#crystal#crystal#Handle',
 \})

sources_non_forked/ale/ale_linters/cs/mcs.vim

@@ -32,6 +32,6 @@ call ale#linter#Define('cs',{
 \   'name': 'mcs',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command_callback': 'ale_linters#cs#mcs#GetCommand',
+\   'command': function('ale_linters#cs#mcs#GetCommand'),
 \   'callback': 'ale_linters#cs#mcs#Handle',
 \})

sources_non_forked/ale/ale_linters/cs/mcsc.vim

@@ -30,7 +30,7 @@ function! ale_linters#cs#mcsc#GetCommand(buffer) abort
 
     " register temporary module target file with ale
     " register temporary module target file with ALE.
-    let l:out = ale#engine#CreateFile(a:buffer)
+    let l:out = ale#command#CreateFile(a:buffer)
 
     " The code is compiled as a module and the output is redirected to a
     " temporary file.
@@ -75,7 +75,7 @@ call ale#linter#Define('cs',{
 \   'name': 'mcsc',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command_callback': 'ale_linters#cs#mcsc#GetCommand',
+\   'command': function('ale_linters#cs#mcsc#GetCommand'),
 \   'callback': 'ale_linters#cs#mcsc#Handle',
 \   'lint_file': 1
 \})

sources_non_forked/ale/ale_linters/css/csslint.vim

@@ -13,6 +13,6 @@ endfunction
 call ale#linter#Define('css', {
 \   'name': 'csslint',
 \   'executable': 'csslint',
-\   'command_callback': 'ale_linters#css#csslint#GetCommand',
+\   'command': function('ale_linters#css#csslint#GetCommand'),
 \   'callback': 'ale#handlers#css#HandleCSSLintFormat',
 \})

sources_non_forked/ale/ale_linters/css/stylelint.vim

@@ -11,9 +11,9 @@ endfunction
 
 call ale#linter#Define('css', {
 \   'name': 'stylelint',
-\   'executable_callback': ale#node#FindExecutableFunc('css_stylelint', [
+\   'executable': {b -> ale#node#FindExecutable(b, 'css_stylelint', [
 \       'node_modules/.bin/stylelint',
-\   ]),
-\   'command_callback': 'ale_linters#css#stylelint#GetCommand',
+\   ])},
+\   'command': function('ale_linters#css#stylelint#GetCommand'),
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

sources_non_forked/ale/ale_linters/cucumber/cucumber.vim

@@ -41,6 +41,6 @@ endfunction
 call ale#linter#Define('cucumber', {
 \   'name': 'cucumber',
 \   'executable': 'cucumber',
-\   'command_callback': 'ale_linters#cucumber#cucumber#GetCommand',
+\   'command': function('ale_linters#cucumber#cucumber#GetCommand'),
 \   'callback': 'ale_linters#cucumber#cucumber#Handle'
 \})

sources_non_forked/ale/ale_linters/cuda/nvcc.vim

@@ -7,7 +7,7 @@ call ale#Set('cuda_nvcc_options', '-std=c++11')
 function! ale_linters#cuda#nvcc#GetCommand(buffer) abort
     " Unused: use ale#util#nul_file
     " let l:output_file = ale#util#Tempname() . '.ii'
-    " call ale#engine#ManageFile(a:buffer, l:output_file)
+    " call ale#command#ManageFile(a:buffer, l:output_file)
     return '%e -cuda'
     \   . ale#Pad(ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer)))
     \   . ale#Pad(ale#Var(a:buffer, 'cuda_nvcc_options'))
@@ -42,8 +42,8 @@ endfunction
 call ale#linter#Define('cuda', {
 \   'name': 'nvcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('cuda_nvcc_executable'),
-\   'command_callback': 'ale_linters#cuda#nvcc#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cuda_nvcc_executable')},
+\   'command': function('ale_linters#cuda#nvcc#GetCommand'),
 \   'callback': 'ale_linters#cuda#nvcc#HandleNVCCFormat',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/d/dls.vim

@@ -16,7 +16,7 @@ endfunction
 call ale#linter#Define('d', {
 \   'name': 'dls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#d#dls#GetExecutable',
-\   'command_callback': 'ale_linters#d#dls#GetExecutable',
-\   'project_root_callback': 'ale_linters#d#dls#FindProjectRoot',
+\   'executable': function('ale_linters#d#dls#GetExecutable'),
+\   'command': function('ale_linters#d#dls#GetExecutable'),
+\   'project_root': function('ale_linters#d#dls#FindProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/dart/dartanalyzer.vim

@@ -29,8 +29,8 @@ endfunction
 
 call ale#linter#Define('dart', {
 \   'name': 'dartanalyzer',
-\   'executable_callback': ale#VarFunc('dart_dartanalyzer_executable'),
-\   'command_callback': 'ale_linters#dart#dartanalyzer#GetCommand',
+\   'executable': {b -> ale#Var(b, 'dart_dartanalyzer_executable')},
+\   'command': function('ale_linters#dart#dartanalyzer#GetCommand'),
 \   'callback': 'ale_linters#dart#dartanalyzer#Handle',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/dart/language_server.vim

@@ -14,7 +14,7 @@ endfunction
 call ale#linter#Define('dart', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('dart_language_server_executable'),
+\   'executable': {b -> ale#Var(b, 'dart_language_server_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
+\   'project_root': function('ale_linters#dart#language_server#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/dockerfile/dockerfile_lint.vim

@@ -55,7 +55,7 @@ endfunction
 
 call ale#linter#Define('dockerfile', {
 \   'name': 'dockerfile_lint',
-\   'executable_callback': ale#VarFunc('dockerfile_dockerfile_lint_executable'),
-\   'command_callback': 'ale_linters#dockerfile#dockerfile_lint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'dockerfile_dockerfile_lint_executable')},
+\   'command': function('ale_linters#dockerfile#dockerfile_lint#GetCommand'),
 \   'callback': 'ale_linters#dockerfile#dockerfile_lint#Handle',
 \})

sources_non_forked/ale/ale_linters/dockerfile/hadolint.vim

@@ -93,7 +93,7 @@ endfunction
 
 call ale#linter#Define('dockerfile', {
 \   'name': 'hadolint',
-\   'executable_callback': 'ale_linters#dockerfile#hadolint#GetExecutable',
-\   'command_callback': 'ale_linters#dockerfile#hadolint#GetCommand',
+\   'executable': function('ale_linters#dockerfile#hadolint#GetExecutable'),
+\   'command': function('ale_linters#dockerfile#hadolint#GetCommand'),
 \   'callback': 'ale_linters#dockerfile#hadolint#Handle',
 \})

sources_non_forked/ale/ale_linters/elixir/credo.vim

@@ -47,6 +47,6 @@ endfunction
 call ale#linter#Define('elixir', {
 \   'name': 'credo',
 \   'executable': 'mix',
-\   'command_callback': 'ale_linters#elixir#credo#GetCommand',
+\   'command': function('ale_linters#elixir#credo#GetCommand'),
 \   'callback': 'ale_linters#elixir#credo#Handle',
 \})

sources_non_forked/ale/ale_linters/elixir/dialyxir.vim

@@ -35,7 +35,7 @@ endfunction
 call ale#linter#Define('elixir', {
 \   'name': 'dialyxir',
 \   'executable': 'mix',
-\   'command_callback': 'ale_linters#elixir#dialyxir#GetCommand',
+\   'command': function('ale_linters#elixir#dialyxir#GetCommand'),
 \   'callback': 'ale_linters#elixir#dialyxir#Handle',
 \})
 

sources_non_forked/ale/ale_linters/elixir/dogma.vim

@@ -39,7 +39,7 @@ endfunction
 call ale#linter#Define('elixir', {
 \   'name': 'dogma',
 \   'executable': 'mix',
-\   'command_callback': 'ale_linters#elixir#dogma#GetCommand',
+\   'command': function('ale_linters#elixir#dogma#GetCommand'),
 \   'lint_file': 1,
 \   'callback': 'ale_linters#elixir#dogma#Handle',
 \})

sources_non_forked/ale/ale_linters/elixir/elixir_ls.vim

@@ -14,8 +14,8 @@ endfunction
 call ale#linter#Define('elixir', {
 \   'name': 'elixir-ls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#elixir#elixir_ls#GetExecutable',
-\   'command_callback': 'ale_linters#elixir#elixir_ls#GetExecutable',
-\   'project_root_callback': 'ale#handlers#elixir#FindMixUmbrellaRoot',
-\   'lsp_config_callback': ale#VarFunc('elixir_elixir_ls_config'),
+\   'executable': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'command': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'project_root': function('ale#handlers#elixir#FindMixUmbrellaRoot'),
+\   'lsp_config': {b -> ale#Var(b, 'elixir_elixir_ls_config')},
 \})

sources_non_forked/ale/ale_linters/elixir/mix.vim

@@ -32,7 +32,7 @@ endfunction
 function! ale_linters#elixir#mix#GetCommand(buffer) abort
     let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
 
-    let l:temp_dir = ale#engine#CreateDirectory(a:buffer)
+    let l:temp_dir = ale#command#CreateDirectory(a:buffer)
 
     let l:mix_build_path = has('win32')
     \   ? 'set MIX_BUILD_PATH=' . ale#Escape(l:temp_dir) . ' &&'
@@ -46,7 +46,7 @@ endfunction
 call ale#linter#Define('elixir', {
 \   'name': 'mix',
 \   'executable': 'mix',
-\   'command_callback': 'ale_linters#elixir#mix#GetCommand',
+\   'command': function('ale_linters#elixir#mix#GetCommand'),
 \   'callback': 'ale_linters#elixir#mix#Handle',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/elm/make.vim

@@ -189,7 +189,10 @@ endfunction
 " Return the command to execute the linter in the projects directory.
 " If it doesn't, then this will fail when imports are needed.
 function! ale_linters#elm#make#GetCommand(buffer) abort
+    let l:executable = ale_linters#elm#make#GetExecutable(a:buffer)
     let l:root_dir = ale_linters#elm#make#GetRootDir(a:buffer)
+    let l:is_v19 = ale_linters#elm#make#IsVersionGte19(a:buffer)
+    let l:is_using_elm_test = l:executable =~# 'elm-test$'
 
     if empty(l:root_dir)
         let l:dir_set_cmd = ''
@@ -197,11 +200,20 @@ function! ale_linters#elm#make#GetCommand(buffer) abort
         let l:dir_set_cmd = 'cd ' . ale#Escape(l:root_dir) . ' && '
     endif
 
+    " elm-test needs to know the path of elm-make if elm isn't installed globally.
+    " https://github.com/rtfeldman/node-test-runner/blob/57728f10668f2d2ab3179e7e3208bcfa9a1f19aa/README.md#--compiler
+    if l:is_v19 && l:is_using_elm_test
+        let l:elm_make_executable = ale#node#FindExecutable(a:buffer, 'elm_make', ['node_modules/.bin/elm'])
+        let l:elm_test_compiler_flag = ' --compiler ' . l:elm_make_executable . ' '
+    else
+        let l:elm_test_compiler_flag = ' '
+    endif
+
     " The elm compiler, at the time of this writing, uses '/dev/null' as
     " a sort of flag to tell the compiler not to generate an output file,
     " which is why this is hard coded here.
     " Source: https://github.com/elm-lang/elm-compiler/blob/19d5a769b30ec0b2fc4475985abb4cd94cd1d6c3/builder/src/Generate/Output.hs#L253
-    return l:dir_set_cmd . '%e make --report=json --output=/dev/null %t'
+    return l:dir_set_cmd . '%e make --report=json --output=/dev/null' . l:elm_test_compiler_flag . '%t'
 endfunction
 
 function! ale_linters#elm#make#GetExecutable(buffer) abort
@@ -210,10 +222,10 @@ function! ale_linters#elm#make#GetExecutable(buffer) abort
 
     if l:is_test && l:is_v19
         return ale#node#FindExecutable(
-\           a:buffer,
-\           'elm_make',
-\           ['node_modules/.bin/elm-test', 'node_modules/.bin/elm']
-\       )
+        \   a:buffer,
+        \   'elm_make',
+        \   ['node_modules/.bin/elm-test', 'node_modules/.bin/elm']
+        \)
     else
         return ale#node#FindExecutable(a:buffer, 'elm_make', ['node_modules/.bin/elm'])
     endif
@@ -221,8 +233,8 @@ endfunction
 
 call ale#linter#Define('elm', {
 \   'name': 'make',
-\   'executable_callback': 'ale_linters#elm#make#GetExecutable',
+\   'executable': function('ale_linters#elm#make#GetExecutable'),
 \   'output_stream': 'both',
-\   'command_callback': 'ale_linters#elm#make#GetCommand',
+\   'command': function('ale_linters#elm#make#GetCommand'),
 \   'callback': 'ale_linters#elm#make#Handle'
 \})

sources_non_forked/ale/ale_linters/erlang/erlc.vim

@@ -4,7 +4,7 @@ let g:ale_erlang_erlc_options = get(g:, 'ale_erlang_erlc_options', '')
 
 function! ale_linters#erlang#erlc#GetCommand(buffer) abort
     let l:output_file = ale#util#Tempname()
-    call ale#engine#ManageFile(a:buffer, l:output_file)
+    call ale#command#ManageFile(a:buffer, l:output_file)
 
     return 'erlc -o ' . ale#Escape(l:output_file)
     \   . ' ' . ale#Var(a:buffer, 'erlang_erlc_options')
@@ -91,6 +91,6 @@ endfunction
 call ale#linter#Define('erlang', {
 \   'name': 'erlc',
 \   'executable': 'erlc',
-\   'command_callback': 'ale_linters#erlang#erlc#GetCommand',
+\   'command': function('ale_linters#erlang#erlc#GetCommand'),
 \   'callback': 'ale_linters#erlang#erlc#Handle',
 \})

sources_non_forked/ale/ale_linters/erlang/syntaxerl.vim

@@ -26,7 +26,7 @@ endfunction
 
 call ale#linter#Define('erlang', {
 \   'name': 'syntaxerl',
-\   'executable_callback': ale#VarFunc('erlang_syntaxerl_executable'),
+\   'executable': {b -> ale#Var(b, 'erlang_syntaxerl_executable')},
 \   'command_chain': [
 \       {'callback': {-> '%e -h'}},
 \       {'callback': 'ale_linters#erlang#syntaxerl#GetCommand'},

sources_non_forked/ale/ale_linters/eruby/erb.vim

@@ -19,7 +19,7 @@ call ale#linter#Define('eruby', {
 \   'aliases': ['erubylint'],
 \   'executable': 'erb',
 \   'output_stream': 'stderr',
-\   'command_callback': 'ale_linters#eruby#erb#GetCommand',
+\   'command': function('ale_linters#eruby#erb#GetCommand'),
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})
 

sources_non_forked/ale/ale_linters/eruby/erubis.vim

@@ -18,6 +18,6 @@ call ale#linter#Define('eruby', {
 \   'name': 'erubis',
 \   'executable': 'erubis',
 \   'output_stream': 'stderr',
-\   'command_callback': 'ale_linters#eruby#erubis#GetCommand',
+\   'command': function('ale_linters#eruby#erubis#GetCommand'),
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})

sources_non_forked/ale/ale_linters/eruby/ruumba.vim

@@ -56,7 +56,7 @@ endfunction
 
 call ale#linter#Define('eruby', {
 \   'name': 'ruumba',
-\   'executable_callback': ale#VarFunc('eruby_ruumba_executable'),
-\   'command_callback': 'ale_linters#eruby#ruumba#GetCommand',
+\   'executable': {b -> ale#Var(b, 'eruby_ruumba_executable')},
+\   'command': function('ale_linters#eruby#ruumba#GetCommand'),
 \   'callback': 'ale_linters#eruby#ruumba#Handle',
 \})

sources_non_forked/ale/ale_linters/fortran/gcc.vim

@@ -66,7 +66,7 @@ endfunction
 call ale#linter#Define('fortran', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('fortran_gcc_executable'),
-\   'command_callback': 'ale_linters#fortran#gcc#GetCommand',
+\   'executable': {b -> ale#Var(b, 'fortran_gcc_executable')},
+\   'command': function('ale_linters#fortran#gcc#GetCommand'),
 \   'callback': 'ale_linters#fortran#gcc#Handle',
 \})

sources_non_forked/ale/ale_linters/fortran/language_server.vim

@@ -13,7 +13,7 @@ endfunction
 call ale#linter#Define('fortran', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('fortran_language_server_executable'),
+\   'executable': {b -> ale#Var(b, 'fortran_language_server_executable')},
 \   'command': '%e',
-\   'project_root_callback': 'ale_linters#fortran#language_server#GetProjectRoot',
+\   'project_root': function('ale_linters#fortran#language_server#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/fuse/fusionlint.vim

@@ -27,7 +27,7 @@ endfunction
 
 call ale#linter#Define('fuse', {
 \   'name': 'fusionlint',
-\   'executable_callback': ale#VarFunc('fuse_fusionlint_executable'),
-\   'command_callback': 'ale_linters#fuse#fusionlint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'fuse_fusionlint_executable')},
+\   'command': function('ale_linters#fuse#fusionlint#GetCommand'),
 \   'callback': 'ale_linters#fuse#fusionlint#Handle',
 \})

sources_non_forked/ale/ale_linters/gitcommit/gitlint.vim

@@ -45,7 +45,7 @@ endfunction
 call ale#linter#Define('gitcommit', {
 \   'name': 'gitlint',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#gitcommit#gitlint#GetExecutable',
-\   'command_callback': 'ale_linters#gitcommit#gitlint#GetCommand',
+\   'executable': function('ale_linters#gitcommit#gitlint#GetExecutable'),
+\   'command': function('ale_linters#gitcommit#gitlint#GetCommand'),
 \   'callback': 'ale_linters#gitcommit#gitlint#Handle',
 \})

sources_non_forked/ale/ale_linters/glsl/glslang.vim

@@ -34,7 +34,7 @@ endfunction
 
 call ale#linter#Define('glsl', {
 \   'name': 'glslang',
-\   'executable_callback': ale#VarFunc('glsl_glslang_executable'),
-\   'command_callback': 'ale_linters#glsl#glslang#GetCommand',
+\   'executable': {b -> ale#Var(b, 'glsl_glslang_executable')},
+\   'command': function('ale_linters#glsl#glslang#GetCommand'),
 \   'callback': 'ale_linters#glsl#glslang#Handle',
 \})

sources_non_forked/ale/ale_linters/glsl/glslls.vim

@@ -24,7 +24,7 @@ endfunction
 call ale#linter#Define('glsl', {
 \   'name': 'glslls',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('glsl_glslls_executable'),
-\   'command_callback': 'ale_linters#glsl#glslls#GetCommand',
-\   'project_root_callback': 'ale_linters#glsl#glslls#GetProjectRoot',
+\   'executable': {b -> ale#Var(b, 'glsl_glslls_executable')},
+\   'command': function('ale_linters#glsl#glslls#GetCommand'),
+\   'project_root': function('ale_linters#glsl#glslls#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/go/bingo.vim

@@ -23,7 +23,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'bingo',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('go_bingo_executable'),
-\   'command_callback': 'ale_linters#go#bingo#GetCommand',
-\   'project_root_callback': 'ale_linters#go#bingo#FindProjectRoot',
+\   'executable': {b -> ale#Var(b, 'go_bingo_executable')},
+\   'command': function('ale_linters#go#bingo#GetCommand'),
+\   'project_root': function('ale_linters#go#bingo#FindProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/go/gobuild.vim

@@ -48,8 +48,8 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'gobuild',
 \   'aliases': ['go build'],
-\   'executable_callback': ale#VarFunc('go_go_executable'),
-\   'command_callback': 'ale_linters#go#gobuild#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'command': function('ale_linters#go#gobuild#GetCommand'),
 \   'output_stream': 'stderr',
 \   'callback': 'ale_linters#go#gobuild#Handler',
 \   'lint_file': 1,

sources_non_forked/ale/ale_linters/go/golangci_lint.vim

@@ -49,8 +49,8 @@ endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'golangci-lint',
-\   'executable_callback': ale#VarFunc('go_golangci_lint_executable'),
-\   'command_callback': 'ale_linters#go#golangci_lint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_golangci_lint_executable')},
+\   'command': function('ale_linters#go#golangci_lint#GetCommand'),
 \   'callback': 'ale_linters#go#golangci_lint#Handler',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/go/golint.vim

@@ -15,7 +15,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'golint',
 \   'output_stream': 'both',
-\   'executable_callback': ale#VarFunc('go_golint_executable'),
-\   'command_callback': 'ale_linters#go#golint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_golint_executable')},
+\   'command': function('ale_linters#go#golint#GetCommand'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

sources_non_forked/ale/ale_linters/go/gometalinter.vim

@@ -50,8 +50,8 @@ endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gometalinter',
-\   'executable_callback': ale#VarFunc('go_gometalinter_executable'),
-\   'command_callback': 'ale_linters#go#gometalinter#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_gometalinter_executable')},
+\   'command': function('ale_linters#go#gometalinter#GetCommand'),
 \   'callback': 'ale_linters#go#gometalinter#Handler',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/go/gosimple.vim

@@ -8,7 +8,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'gosimple',
 \   'executable': 'gosimple',
-\   'command_callback': 'ale_linters#go#gosimple#GetCommand',
+\   'command': function('ale_linters#go#gosimple#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'output_stream': 'both',
 \   'lint_file': 1,

sources_non_forked/ale/ale_linters/go/gotype.vim

@@ -13,7 +13,7 @@ call ale#linter#Define('go', {
 \   'name': 'gotype',
 \   'output_stream': 'stderr',
 \   'executable': 'gotype',
-\   'command_callback': 'ale_linters#go#gotype#GetCommand',
+\   'command': function('ale_linters#go#gotype#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/go/govet.vim

@@ -20,8 +20,8 @@ call ale#linter#Define('go', {
 \   'name': 'govet',
 \   'aliases': ['go vet'],
 \   'output_stream': 'stderr',
-\   'executable_callback': ale#VarFunc('go_go_executable'),
-\   'command_callback': 'ale_linters#go#govet#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'command': function('ale_linters#go#govet#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

sources_non_forked/ale/ale_linters/go/langserver.vim

@@ -10,8 +10,8 @@ function! ale_linters#go#langserver#GetCommand(buffer) abort
     let l:options = substitute(l:options, '-gocodecompletion', '', 'g')
     let l:options = filter(split(l:options, ' '), 'empty(v:val) != 1')
 
-    if(ale#Var(a:buffer, 'completion_enabled') == 1)
-      call add(l:options, '-gocodecompletion')
+    if ale#Var(a:buffer, 'completion_enabled')
+        call add(l:options, '-gocodecompletion')
     endif
 
     let l:options = uniq(sort(l:options))
@@ -22,7 +22,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'golangserver',
 \   'lsp': 'stdio',
-\   'executable_callback': ale#VarFunc('go_langserver_executable'),
-\   'command_callback': 'ale_linters#go#langserver#GetCommand',
-\   'project_root_callback': 'ale#go#FindProjectRoot',
+\   'executable': {b -> ale#Var(b, 'go_langserver_executable')},
+\   'command': function('ale_linters#go#langserver#GetCommand'),
+\   'project_root': function('ale#go#FindProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/go/staticcheck.vim

@@ -26,7 +26,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'staticcheck',
 \   'executable': 'staticcheck',
-\   'command_callback': 'ale_linters#go#staticcheck#GetCommand',
+\   'command': function('ale_linters#go#staticcheck#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'output_stream': 'both',
 \   'lint_file': 1,

sources_non_forked/ale/ale_linters/graphql/eslint.vim

@@ -3,7 +3,7 @@
 
 call ale#linter#Define('graphql', {
 \   'name': 'eslint',
-\   'executable_callback': 'ale#handlers#eslint#GetExecutable',
-\   'command_callback': 'ale#handlers#eslint#GetCommand',
+\   'executable': function('ale#handlers#eslint#GetExecutable'),
+\   'command': function('ale#handlers#eslint#GetCommand'),
 \   'callback': 'ale#handlers#eslint#Handle',
 \})

sources_non_forked/ale/ale_linters/graphql/gqlint.vim

@@ -10,6 +10,6 @@ endfunction
 call ale#linter#Define('graphql', {
 \   'name': 'gqlint',
 \   'executable': 'gqlint',
-\   'command_callback': 'ale_linters#graphql#gqlint#GetCommand',
+\   'command': function('ale_linters#graphql#gqlint#GetCommand'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

sources_non_forked/ale/ale_linters/hack/hack.vim

@@ -16,7 +16,7 @@ endfunction
 call ale#linter#Define('hack', {
 \   'name': 'hack',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#hack#hack#GetExecutable',
+\   'executable': function('ale_linters#hack#hack#GetExecutable'),
 \   'command': '%e lsp --from vim-ale',
-\   'project_root_callback': 'ale_linters#hack#hack#GetProjectRoot',
+\   'project_root': function('ale_linters#hack#hack#GetProjectRoot'),
 \})

sources_non_forked/ale/ale_linters/hack/hhast.vim

@@ -9,7 +9,7 @@ function! ale_linters#hack#hhast#GetProjectRoot(buffer) abort
     let l:hhconfig = ale#path#FindNearestFile(a:buffer, '.hhconfig')
 
     if empty(l:hhconfig)
-      return ''