std/re find can't find matches

[iacore]

Description

The regex library doesn't work as advertised

import std/re

let s = "abcdefgabc1234abcdefg"
let r = re"abc(\d+)"
var matches: seq[string]
echo find(s, r, matches)
echo matches

Nim Version

Both 1.6.10 and devel

Current Output

7
@[]

Expected Output

7
@["1234"]

Possible Solution

No response

Additional Information

No response

[iacore]

It seems like the re library is very broken.

code:

import std/re

let s = "abcdefgabc1234abcdefg"
let r = re".*abc(\d+).*"
if s =~ r:
  echo matches

Output:

["1234", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]

[Araq]

No bug here. You're supposed to use something like

import std/re

let s = "abcdefgabc1234abcdefg"
let r = re"abc(\d+)"
var matches: array[1, string]
echo find(s, r, matches)
echo matches