Add janet-format fixer for Janet (#5142)

autoload/ale/fix/registry.vim

@@ -737,6 +737,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['clojure'],
 \       'description': 'formatter and linter for clojure files',
 \   },
+\   'janet-format': {
+\       'function': 'ale#fixers#janet_format#Fix',
+\       'suggested_filetypes': ['janet'],
+\       'description': 'Formatter for janet files',
+\   },
 \   'typstyle': {
 \       'function': 'ale#fixers#typstyle#Fix',
 \       'suggested_filetypes': ['typst'],

autoload/ale/fixers/janet_format.vim

@@ -0,0 +1,13 @@
+" Author: David Gouch <dgouch@gmail.com>
+" Description: Format with janet-format https://github.com/janet-lang/spork
+
+call ale#Set('janet_janet_format_executable', 'janet-format')
+
+function! ale#fixers#janet_format#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'janet_janet_format_executable')
+
+    return {
+    \   'command': ale#Escape(l:executable) . ' %t',
+    \   'read_temporary_file': 1,
+    \}
+endfunction