Question

If there exists a tool to automatically prettify my js code then I would much rather use that package.

I want to expand everything such that a statement like this:

var n=x+(y+(z/k))-123;

turns into:

var n = x + (y + (z / k)) - 123;

However, for the moment, I want to convert all my cramped =, ==, and ===, statements into padded versions of themselves.

I tried using something like :%s/[^ ]==[^ ]/ == /g but the problem with that is that it clips the preceeding and proceeding character.

Answer 1

In Vim, you could use something like:

:%s!\s*\([!<>=/*+-]\+\)\s*! \1 !g

Explanation:

• s – substitute
• ! – start pattern
• \s* – zero or more whitespace
• \( – start group
• [!<>=/*+-]\+ – one or more of !<>=/*+-
• \) – end of group
• \s* zero or more whitespace
• ! end of pattern, beginning of replacement
• <space>\1<space> – the matched group padded by space
• ! – End of replacement
• g – globally on a line

But if you want to prettify code and stick to a defined coding standard, you’re better off using a tool like Artistic Style.