A Rename, references and the like tell the server of every open file of its language first, so a rename reaches files it had not seen and the preview lists them

zls renames only in the documents in its store, and syncDoc told it of
a file only when a query was asked from it, so renaming in progress.zig
left main.zig unchanged and broken, with no preview. For a query whose
answer can reach other files (rename, references, implementation,
workspace symbols, calls and type hierarchy), the host snapshots every
other open file and the client syncs those its server answers for
first. The mock server answers a rename in each document it was told
of; lsp-rename-files opens main.rs by a look, renames from lib.rs, and
its preview lists both.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/src/lsp/lsp_client.zig b/src/lsp/lsp_client.zig
index 0c5e3b7e..b57b348e 100644
--- a/src/lsp/lsp_client.zig
+++ b/src/lsp/lsp_client.zig
@@ -501,6 +501,14 @@ fn run(c: *Conn, si: usize, arena: std.mem.Allocator, req: lsp.Req, out: *std.Io
     var uri: std.ArrayList(u8) = .empty;
     try uriOf(&uri, arena, req.path);
     try syncDoc(c, si, arena, uri.items, req.source);
+    // Every other open file this server answers for, before a query whose
+    // answer reaches them: zls renames only in the documents it has.
+    for (req.others) |doc| if (specFor(doc.path) == si and !std.mem.eql(u8, doc.path, req.path)) {
+        var other: std.ArrayList(u8) = .empty;
+        try uriOf(&other, arena, doc.path);
+        try syncDoc(c, si, arena, other.items, doc.source);
+        tr.note("synced {s} first", .{std.fs.path.basename(doc.path)});
+    };
 
     const pos = posOf(req.source, req.offset, c.caps.enc);
     var cx: Cx = .{ .arena = arena, .base = req.root, .cur_path = req.path, .cur_src = req.source, .out = out };