VS Code Snippets: How to replace underscore with spaces and capitalize words

Question

I can replace underscores with spaces from the $1 like this ${1/[_]/ /g}

And the capitalization is done with ${1/(.*)/${1:/capitalize}/}

But how to combine both to get a result like this:

model_name --> Model Name?

Answer 1

Try:

"${1/([^_]*)(_?)/${1:/capitalize}${2:+ }/g}"

That will capture everything before an underscore in group 1 and capitalize that group.

The underscore, if any, will be in capture group 2. ${2:+ } is a conditional: if there is a capture group 2, add a space.

Note the global g at the end is necessary to repeatedly match each of these groups along the input.

It will work with any length input from:

model
model_name
model_name_more_stuff    // etc.