cli: invert special case arg parsing logic

Invert special case logic so that we can add additional cases. The
previous logic bailed if we weren't the only special case ('-e').

src/config/Config.zig

@@ -1630,9 +1630,7 @@ pub fn finalize(self: *Config) !void {
 /// Callback for src/cli/args.zig to allow us to handle special cases
 /// like `--help` or `-e`. Returns "false" if the CLI parsing should halt.
 pub fn parseManuallyHook(self: *Config, alloc: Allocator, arg: []const u8, iter: anytype) !bool {
-    // If it isn't "-e" then we just continue parsing normally.
-    if (!std.mem.eql(u8, arg, "-e")) return true;
-
+    if (std.mem.eql(u8, arg, "-e")) {
         // Build up the command. We don't clean this up because we take
         // ownership in our allocator.
         var command = std.ArrayList(u8).init(alloc);
@@ -1661,6 +1659,10 @@ pub fn parseManuallyHook(self: *Config, alloc: Allocator, arg: []const u8, iter:
         return false;
     }
 
+    // If we didn't find a special case, continue parsing normally
+    return true;
+}
+
 /// Create a shallow copy of this config. This will share all the memory
 /// allocated with the previous config but will have a new arena for
 /// any changes or new allocations. The config should have `deinit`