Change the dartfmt_executable to point to "dart format".

This is because dartfmt has been replaced by dart format.

autoload/codefmt/dartfmt.vim

@@ -23,7 +23,7 @@ function! codefmt#dartfmt#GetFormatter() abort
   let l:formatter = {
       \ 'name': 'dartfmt',
       \ 'setup_instructions': 'Install the Dart SDK from ' .
-          \ 'https://www.dartlang.org/tools/sdk/'}
+          \ 'https://github.com/google/vim-codefmt'}
 
   function l:formatter.IsAvailable() abort
     return executable(s:plugin.Flag('dartfmt_executable'))
@@ -38,7 +38,16 @@ function! codefmt#dartfmt#GetFormatter() abort
   " @flag(dartfmt_executable}, only targetting the range from {startline} to
   " {endline}
   function l:formatter.FormatRange(startline, endline) abort
-    let l:cmd = [ s:plugin.Flag('dartfmt_executable') ]
+    let l:dartfmt_executable = s:plugin.Flag('dartfmt_executable')
+    if type(l:dartfmt_executable) is# type([])
+      let l:cmd = l:dartfmt_executable
+    elseif type(l:dartfmt_executable) is# type('')
+      let l:cmd = [l:dartfmt_executable]
+    else
+      throw maktaba#error#WrongType(
+          \ 'dartfmt_executable flag must be a list or string. Found %s',
+          \ string(l:dartfmt_executable))
+    endif
     try
       " dartfmt does not support range formatting yet:
       " https://github.com/dart-lang/dart_style/issues/92

doc/codefmt.txt

@@ -84,8 +84,8 @@ additionally adjust imports when formatting.
 Default: 'gofmt' `
 
                                                   *codefmt:dartfmt_executable*
-The path to the dartfmt executable.
-Default: 'dartfmt' `
+The path to the dartfmt executable. Either a list or string.
+Default: ['dart', 'format'] `
 
                                               *codefmt:js_beautify_executable*
 The path to the js-beautify executable.

instant/flags.vim

@@ -73,8 +73,9 @@ call s:plugin.Flag('clang_format_style', 'file')
 call s:plugin.Flag('gofmt_executable', 'gofmt')
 
 ""
-" The path to the dartfmt executable.
-call s:plugin.Flag('dartfmt_executable', 'dartfmt')
+" The path to the dartfmt executable. Either a list or a string.
+call s:plugin.Flag('dartfmt_executable', ['dart', 'format'])
+
 
 ""
 " The path to the js-beautify executable.

vroom/dartfmt.vroom

@@ -14,33 +14,31 @@ examples.
 
   :call codefmt#SetWhetherToPerformIsAvailableChecksForTesting(0)
 
-
-The dartfmt formatter expects the dartfmt executable to be installed on your
+The dart formatter expects the dart executable to be installed on your
 system.
 
   % main(){}
   :FormatCode dartfmt
-  ! dartfmt .*
+  ! dart format .*
   $ main(){}
 
-The name or path of the dartfmt executable can be configured via the
-dartfmt_executable flag if the default of "dartfmt" doesn't work.
+The name, path, or list of the dart format command can be configured via the
+dartfmt_executable flag if the default of ["dart", "format"] doesn't work.
 
-  :Glaive codefmt dartfmt_executable='mydartfmt'
+  :Glaive codefmt dartfmt_executable='dartfmt'
   :FormatCode dartfmt
-  ! mydartfmt .*
+  ! dartfmt .*
   $ main(){}
-  :Glaive codefmt dartfmt_executable='dartfmt'
-
+  :Glaive codefmt dartfmt_executable=`['dart', 'format']`
 
-You can format any buffer with dartfmt specifying the formatter explicitly.
+You can format any buffer with dart format specifying the formatter explicitly.
 
   @clear
   % main() { print("hello ");<CR>
   |print("world\n");}
 
   :FormatCode dartfmt
-  ! dartfmt .*2>.*
+  ! dart format .*2>.*
   $ main() {
   $ \tprint("hello ");
   $ \tprint("world\\n");
@@ -51,14 +49,14 @@ You can format any buffer with dartfmt specifying the formatter explicitly.
   }
   @end
 
-The dart filetype will use the dartfmt formatter by default.
+The dart filetype will use the dart formatter by default.
 
   @clear
   % main(){}
 
   :set filetype=dart
   :FormatCode
-  ! dartfmt .*
+  ! dart format .*
   $ main(){}
 
   :set filetype=
@@ -70,7 +68,7 @@ It can format specific line ranges of code using :FormatLines.
   |Print("hello "); Print("world\n");}
 
   :1,2FormatLines dartfmt
-  ! dartfmt .*2>.*
+  ! dart format .*2>.*
   $ main() {
   $ \tprint("hello ");
   $ \tprint("world\\n");
@@ -81,5 +79,5 @@ It can format specific line ranges of code using :FormatLines.
   }
   @end
 
-NOTE: the dartfmt formatter does not natively support range formatting, so there
+NOTE: the dart formatter does not natively support range formatting, so there
 are certain limitations like not being able to format misaligned braces.