How to use custom function ExtractAllRegex() as an array formula? [Google Sheets] - google-apps-script

Question

I'm using #Wiktor Stribiżew 's custom function ExtractAllRegex(). The script extracts all occurrences of a Regex pattern. In the example, I extract all words in column A starting with "v_"
Here is a Google Sheet showing what I'm trying to do.
The original strings are stored in column A. The custom function/the matches are in column B.
Wictors function works great for single cells. It also works great when I manually drag the formula down the column.
Here's Wictor's original code:
function ExtractAllRegex(input, pattern,groupId,separator) {return Array.from(input.matchAll(new RegExp(pattern,'g')), x=>x[groupId]).join(separator);}
Description:
input - current cell value
pattern - regex pattern
groupId - Capturing group ID you want to extract
separator - text used to join the matched results.
The question is, how do I turn column B into a working array formula? Or, perhaps better, how do I modify Wictor's script so it accepts a range instead and auto-fills down column B?

Answer 1

I updated your script to:
function ExtractAllRegex(input, pattern,groupId,separator) {
return input.map ? input.map( inp => ExtractAllRegex(inp, pattern, groupId, separator)) :
Array.from(input.matchAll(new RegExp(pattern,'g')), x=>x[groupId]).join(separator);
}
and changed the formula in B2 to
=ExtractAllRegex(A2:A13,"(v_.+?\b)",0," ")
See if that works for you?