Regex multiline not working with beginning of line

[jyapayne]

Awesome work on nim-regex! There is one issue that I'm experiencing but may just be using incorrectly.

@genotrance and I are working on replacing nimgen's nre dependency with your pure Nim solution. However, there is one snag where your library performs something different than I expect.

Given the code:

import regex

var input = """foo
           bar
   baxx
             bazz
"""

echo input.replace(re"(?m)^", "//")

The output is:

//f//o//o//
// // // // // // // // // // // //b//a//r//
// // // //b//a//x//x//
// // // // // // // // // // // // // //b//a//z//z/

But I would expect it to be:

//foo
//           bar
//   baxx
//             bazz

which is what I get if I directly replace import regex with import nre in the above code. Am I misunderstanding how the multiline is working?

[nitely]

I know why this occurs, I'll fix it in a couple of hours. It seems nre works as you expect and re never returns (there's an infinite loop). I'm surprise there is no infinite loop here, since this function is based on re 😅 .

[jyapayne]

@nitely awesome, and thanks :)

[nitely]

here is an alternative btw input.replace(re"(.*\n?)", "//$1")

[jyapayne]

@nitely cool, thanks, that works in the meantime!