var itr = Fluent.match("[abc]\\d+", "_ab112_c987b123_d16_");

while (itr.next()) |substr| { // ...

I'm planning to release 0.13.0 and 0.12.1 on Monday, primarily featuring the LLVM 18 upgrade and musl 1.2.5 upgrade. If there are any other impactful changes you want to land, you have 5 days to get them in. 0.12.1 will be the last release in the 0.12.x series.

the release is primarily aimed at helping distributions package zig since it updates to LLVM 18. distros which have llvm 17 can package zig 0.12.1; distros that have llvm 18 can package 0.13.0

agg https://asciinema.org/a/gDna9RnicwYjDRIDn4e07NFSc demo.gif --fps-cap 60 --rows 15 --cols 50

ld.lld: error: undefined symbol: _bla_bla

.id = @uuid("..."),
.time = 1710085168,
.payload = Command {
  .do = @action("clear_chat"),
  .sender = "kristoff-it",
  .roles = ["admin", "mod"],
  .extra = {
    "agent": "Mozilla/5.0",
    "os": "Linux/x64", 
  },
}

// re2zig $INPUT -o $OUTPUT

const std = @import("std");

fn lex(yyinput: [:0]const u8) bool {
    var yycursor: u32 = 0;
    /*!re2c
        re2c:define:YYCTYPE = u8;
        re2c:yyfill:enable = 0;

        number = [1-9][0-9]*;

        number { return true; }
        *      { return false; }
    */
}

test {
    try std.testing.expect(lex("1234"));
}

// Generated by re2c
// re2zig $INPUT -o $OUTPUT

const std = @import("std");

fn lex(yyinput: [:0]const u8) bool {
    var yycursor: u32 = 0;

    var yych: u8 = 0;
    var yystate: u32 = 0;
    while (true) {
        switch (yystate) {
            0 => {
                yych = yyinput[yycursor];
                yycursor += 1;
                switch (yych) {
                    0x31...0x39 => {
                        yystate = 2;
                        continue;
                    },
                    else => {
                        yystate = 1;
                        continue;
                    },
                }
            },
            1 => { return false; },
            2 => {
                yych = yyinput[yycursor];
                switch (yych) {
                    0x30...0x39 => {
                        yycursor += 1;
                        yystate = 2;
                        continue;
                    },
                    else => {
                        yystate = 3;
                        continue;
                    },
                }
            },
            3 => { return true; },
            else => { @panic("internal lexer error"); },
        }
    }

}

test {
    try std.testing.expect(lex("1234"));
}

state: switch (yystate) {
    0 => {
        yych = yyinput[yycursor];
        yycursor += 1;
        switch (yych) {
            '1'...'9' => continue :state 2,
            else => continue :state 1
        }
    },
    1 => { return false; },
    2 => {
        yych = yyinput[yycursor];
        switch (yych) {
            '0'...'9' => {
                yycursor += 1;
                continue :state 2;
            },
            else => continue :state 3,
        }
    },
    3 => { return true; },
    else => { @panic("internal lexer error"); },
}