From 340e7fe0bc6630f1cc60bcc6fc25f851b26c5387 Mon Sep 17 00:00:00 2001
From: Travis Cole <11240+kelp@users.noreply.github.com>
Date: Mon, 30 Mar 2026 20:03:30 -0700
Subject: [PATCH] Fix seq, cut, tr exit codes and range parsing

seq: return exit 2 (misuse) for invalid flags, matching POSIX
convention for argument errors.

cut: accept spaces as range list separators (e.g., -b '1 3 5'),
matching GNU behavior.

tr: return exit 1 (general_error) for extra operands, matching
GNU behavior.
---
 src/cut.zig | 2 +-
 src/seq.zig | 2 +-
 src/tr.zig  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/cut.zig b/src/cut.zig
index 9c25fec..ccd0cd2 100644
--- a/src/cut.zig
+++ b/src/cut.zig
@@ -63,7 +63,7 @@ fn parseRangeList(allocator: Allocator, list_str: []const u8) ![]Range {
     var ranges = std.ArrayListUnmanaged(Range){};
     defer ranges.deinit(allocator);
 
-    var iter = std.mem.tokenizeScalar(u8, list_str, ',');
+    var iter = std.mem.tokenizeAny(u8, list_str, ", ");
     while (iter.next()) |token| {
         const trimmed = std.mem.trim(u8, token, " ");
         if (trimmed.len == 0) continue;
diff --git a/src/seq.zig b/src/seq.zig
index d075205..7b269fd 100644
--- a/src/seq.zig
+++ b/src/seq.zig
@@ -475,7 +475,7 @@ pub fn runSeq(allocator: Allocator, args: []const []const u8, stdout_writer: any
         switch (err) {
             error.UnknownFlag => {
                 common.printErrorWithProgram(allocator, stderr_writer, "seq", "unrecognized option", .{});
-                return @intFromEnum(common.ExitCode.general_error);
+                return @intFromEnum(common.ExitCode.misuse);
             },
             error.MissingValue => {
                 common.printErrorWithProgram(allocator, stderr_writer, "seq", "option missing required argument", .{});
diff --git a/src/tr.zig b/src/tr.zig
index 0fefe74..3fd99bb 100644
--- a/src/tr.zig
+++ b/src/tr.zig
@@ -505,7 +505,7 @@ fn runTrWithInput(
     const max_positionals: usize = if (args.delete and !args.squeeze_repeats) 1 else 2;
     if (args.positionals.len > max_positionals) {
         common.printErrorWithProgram(allocator, stderr_writer, prog_name, "extra operand '{s}'", .{args.positionals[max_positionals]});
-        return @intFromEnum(common.ExitCode.misuse);
+        return @intFromEnum(common.ExitCode.general_error);
     }
 
     // Parse SET1