Implement a preview window for selecting locations to open

syntax/ale-preview-selection.vim

@@ -0,0 +1,11 @@
+if exists('b:current_syntax')
+    finish
+endif
+
+syn match alePreviewSelectionFilename /\v^([a-zA-Z]?:?[^:]+)/
+syn match alPreviewNumber /\v:\d+:\d+$/
+
+hi def link alePreviewSelectionFilename String
+hi def link alePreviewNumber Number
+
+let b:current_syntax = 'ale-preview-selection'