adding better search to tty mode

1 files changed, 21 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index 2b728ea1..c62ee222 100644
--- a/build.zig
+++ b/build.zig
@@ -522,6 +522,27 @@ pub fn build(b: *std.Build) void {
         }
         b.step("hxdiff", "run the helix differential suite (-- <cases.jsonl> [goldens.jsonl [waivers.jsonl]])").dependOn(&run_hxdiff.step);
 
+        // file-vs-pty parity: the SAME harness binary, run in --parity mode.
+        // Each case runs twice over the same text and keys, once in a file
+        // pane and once in a pty pane, and the two result lines must be
+        // identical — the file pane is the oracle, so editing a shell pane
+        // cannot drift away from editing a document.
+        const run_hxparity = b.addRunArtifact(hxdiff);
+        run_hxparity.addArg("--parity");
+        if (b.args) |args| run_hxparity.addArgs(args) else {
+            // the WHOLE helix corpus plus the editing extras: a parity gate
+            // that only ran the cases its author wrote could not catch the
+            // next regression. parity-waivers names the divergences that are
+            // not editing (pardes bindings, pty viewport geometry, a tab the
+            // emulator expands), each with its reason.
+            run_hxparity.addArgs(&.{
+                "--waivers",                "test/hxcases/parity-waivers.jsonl",
+                "test/hxcases/cases.jsonl", "test/hxcases/parity.jsonl",
+            });
+            run_hxparity.setCwd(b.path("."));
+        }
+        b.step("hxparity", "run the file-vs-pty editing parity suite (-- [--waivers w.jsonl] <cases.jsonl>...)").dependOn(&run_hxparity.step);
+
         // modal.zig is pure std — its inline unit tests run here
         const unit = b.addTest(.{ .root_module = b.createModule(.{
             .target = target,