Find and Grep share one +Search a directory, each run replacing the last

Each Grep with a new pattern opened another +Search, until the column
refused panes. Find and Grep now reuse their directory's one, as acme
reuses +Errors, and the exec reads back the pane it filled; a plain
word's LookWord list search keeps a pane a pattern as before.

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

1 files changed, 15 insertions, 2 deletions

diff --git a/src/Output.zig b/src/Output.zig
index b32a40a2..37d25168 100644
--- a/src/Output.zig
+++ b/src/Output.zig
@@ -406,6 +406,16 @@ pub fn open(p: *Pardes, id: usize, dir: []const u8, from: Origin, arg: []const u
     return pane;
 }
 
+/// Find and Grep share one +Search a directory, each run replacing what
+/// the last showed, as acme reuses a directory's +Errors; a pane's own
+/// search (LookWord list) keeps a pane a pattern.
+fn fileSearch(from: Origin) bool {
+    return switch (from) {
+        .cmd => |c| c == .Find or c == .Grep,
+        else => false,
+    };
+}
+
 pub fn fillResults(p: *Pardes, id: usize, dir: []const u8, from: Origin, arg: []const u8, content: []u8, initial_anchor: ?usize) !void {
     var result_content = content;
     errdefer p.gpa.free(result_content);
@@ -448,9 +458,12 @@ pub fn fillResults(p: *Pardes, id: usize, dir: []const u8, from: Origin, arg: []
         const rp = slot orelse continue;
         const rf = if (rp.file) |*f| f else continue;
         const o = if (rf.output) |*x| x else continue;
-        if (!std.meta.eql(o.from, from)) continue;
-        if (by_arg and !std.mem.eql(u8, o.arg(), arg)) continue;
+        const shared = fileSearch(from) and fileSearch(o.from);
+        if (!shared and !std.meta.eql(o.from, from)) continue;
+        if (!shared and by_arg and !std.mem.eql(u8, o.arg(), arg)) continue;
         if (!std.mem.eql(u8, std.fs.path.dirname(rf.path) orelse "", dir)) continue;
+        o.from = from;
+        p.fs.refilled = rp.serial;
         try setArg(o, arg);
         if (std.mem.eql(u8, rf.content, result_content)) {
             p.gpa.free(result_content);