Do Vim scripts have a way to halt on any error?

Question

A simple example:

function! Foo()
    echom 'Starting Foo'
    let x = Bar(123)  " Function does not exist so E117 occurs.
    echom 'Nonetheless, this executes.'
endfunction

Does Vim have a mechanism to abort a function or script if any error occurs -- in other words, something similar in spirit to this setting in bash?

set -o errexit

To clarify, I understand how to wrap error-prone code in try-catch. I'm looking for a general mechanism to get Vim scripts to behave similar to languages like Python, Ruby, Perl, and so forth, where an unhandled error causes execution to screech to a halt.

Luc_Hermitte_15934 · Answer

TL;DR

Always tag functions with abort

Your question has a recent duplicate on vi.SE: https://vi.stackexchange.com/questions/29038/how-do-i-make-a-function-stop-when-an-error-occurs/29039#29039 or, on the same topic: https://vi.stackexchange.com/questions/15905/when-should-a-function-not-be-defined-with-abort

on SO, there are some more explanations regarding abort: Vimscript: what's the point of 'abort' in a function definition?

Do Vim scripts have a way to halt on any error?

1 Answers