feat: add support for CRLF EOL mode

src/tui/status/linenumstate.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const Allocator = std.mem.Allocator;
 const tp = @import("thespian");
+const Buffer = @import("Buffer");
 
 const Plane = @import("renderer").Plane;
 
@@ -13,6 +14,7 @@ lines: usize = 0,
 column: usize = 0,
 buf: [256]u8 = undefined,
 rendered: [:0]const u8 = "",
+eol_mode: Buffer.EolMode = .lf,
 
 const Self = @This();
 
@@ -47,14 +49,21 @@ pub fn render(self: *Self, btn: *Button.State(Self), theme: *const Widget.Theme)
 fn format(self: *Self) void {
     var fbs = std.io.fixedBufferStream(&self.buf);
     const writer = fbs.writer();
-    std.fmt.format(writer, " Ln {d}, Col {d} ", .{ self.line + 1, self.column + 1 }) catch {};
+    const eol_mode = switch (self.eol_mode) {
+        .lf => "",
+        .crlf => " [␍␊]",
+    };
+    std.fmt.format(writer, "{s} Ln {d}, Col {d} ", .{ eol_mode, self.line + 1, self.column + 1 }) catch {};
     self.rendered = @ptrCast(fbs.getWritten());
     self.buf[self.rendered.len] = 0;
 }
 
 pub fn receive(self: *Self, _: *Button.State(Self), _: tp.pid_ref, m: tp.message) error{Exit}!bool {
+    var eol_mode: Buffer.EolModeTag = @intFromEnum(Buffer.EolMode.lf);
     if (try m.match(.{ "E", "pos", tp.extract(&self.lines), tp.extract(&self.line), tp.extract(&self.column) })) {
         self.format();
+    } else if (try m.match(.{ "E", "eol_mode", tp.extract(&eol_mode) })) {
+        self.eol_mode = @enumFromInt(eol_mode);
     } else if (try m.match(.{ "E", "close" })) {
         self.lines = 0;
         self.line = 0;