Occasionally I find myself in a situation where I mismatch curly braces, parenthesis or square brackets: {}()[] in Clojurescript. I am using leininingen and cljsbuild I have a hard time tracking down the error source. Usually it boils down to something like this:
Compiling "resources/public/js/whitespace.js" failed.
clojure.lang.ExceptionInfo: java.lang.RuntimeException: Unmatched delimiter: ) at line 1
Followed by a extensive stack trace that does not seem to contain filename, line-number information.
How can I get more useful information?
My workaround so far
use version control to look for differences of files and their previous states. Then see where brackets where changed.
use vim's parens matching extensively % to the rescue.
You can use Paredit Mode to keep the S-expressions balanced while you type. In Emacs this Mode also warns you if you have an unmatched expression in a file.
There is a vim plugin that provides a Paredit Mode for vim, take a look here: https://github.com/vim-scripts/paredit.vim.