One rule for failing builtins: the write fails, one err, no msg

A builtin that failed through a ctl failed the write and logged its err,
but through look, exec, tagexec or a column's exec it only said so on the
message row, logged as a msg, and the write succeeded. Now every click
write runs its builtin as a ctl line does (ctl.captured): a failure fails
the write, with its words (EINVAL for malformed input, else EIO or what
the words name), logs one err and no msg or announcement. get's Modified
and a look miss are shown but logged once, as their err. A control
character's refusal names its reason, a failed click reads back nothing,
and look never reads back a pane closed since. The special case for a
cut-short Edit through exec goes (the rule covers it); fs.md's table of
exceptions becomes the one rule, as does the skill.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/look.zig b/src/look.zig
index d53ac76a..796eb5bb 100644
--- a/src/look.zig
+++ b/src/look.zig
@@ -1209,7 +1209,10 @@ fn missed(p: *Pardes, id: usize, comptime fmt: []const u8, args: anytype) void {
     var said: [miss_path_cap + 64]u8 = undefined;
     const why = std.fmt.bufPrint(&said, fmt, args) catch "no match";
     var msg: [said.len + 8]u8 = undefined;
+    // Shown on the pane; logged once, as the err below, not a msg too.
+    p.fs.unlogged = true;
     p.setMessage(id, std.fmt.bufPrint(&msg, "Look: {s}", .{why}) catch "Look: no match");
+    p.fs.unlogged = false;
     const serial = if (p.panes[id]) |pane| pane.serial else 0;
     var rec: [said.len + 32]u8 = undefined;
     pardes.ctlfs.events.notePath(p, "err", std.fmt.bufPrint(&rec, "{d} look: {s}", .{ serial, why }) catch return);