Regex String interpolation fails (silently)

[nikeokoronkwo]

Overview

Apparently, Pkl crashes when Regex inputs have some sort of string interpolation or joining (adding strings together) in the constructor. I understand that Apple Pkl Regex input types are based on Java Regex Syntax, but they support combining strings in the format of a + b + c, while Apple Pkl crashes on either occasions.

Problem

This was the function implemented for this case

local function typeRegex(name: String) Regex = Regex("./src/([A-Za-z]+)/" + name + ".pkl")

And this was the error message received, even without implementing the function (in a variable or item for instance).

An unexpected error has occurred. Would you mind filing a bug report?

Info/Context

• Pkl Version (via pkl --version): 0.26.1

[HT154]

I'm not able to reproduce this on Pkl 0.27.1 (the current release). Given module:

local function typeRegex(name: String): Regex = Regex("./src/([A-Za-z]+)/" + name + ".pkl")
//                                    ^ note this missing colon from your snippet

x = typeRegex("abc").findMatchesIn("./src/abcDEF/abc.pkl").length
y = typeRegex("abc").findMatchesIn("./src/abcDEF/def.pkl").length

As expected, this evaluates to:

x = 1
y = 0

Can you try again on the latest release? If you're still seeing issues, can you share a more complete repro?

[nikeokoronkwo]

Oh, my bad. Must've been the colon Sorry about that

[odenix]

The "unexpected error" message is clearly a bug (possibly fixed by #837).