A path typed with a leading ~ is the home directory, at every entry point that takes one, through one helper

Only DumpDir (dump.zig) and ShaderBuild expanded `~/`, each its own way.
So a look at `~/notes.txt`, `name ~/x`, `Save ~/x`, ThemeFile, Restore and
a quoted `pardes '~/x'` all took `~` as a directory of that name under the
pane's. There is now one rule, filesystem.expandHome. A leading `~`,
alone or before `/` or `:`, is $HOME, else the passwd entry's home;
`~user` is that user's (getpwnam). As in a shell, it applies even beside a
file named `~`, and `./~` names that file. Every entry point runs its
typed path through it:
- look, B3 and 9P, before any parsing, so `~/x:12`, `~/x:12:3` and
  `~/x:/re/` all work;
- name, and a tag's rename;
- Save <path>;
- ThemeFile, DumpDir, Restore and ShaderBuild's shader files;
- the forwarding launch.
Recent rows are not shown with `~` and need nothing. How names are shown
is unchanged.

Tests: expandHome's cases, and HOME unset (passwd), with HOME passed in
rather than set, since setenv moves the environ a spawned child reads.
fs.py covers Save into missing directories under `~`, `name ~/x`, a look
at `~/x:3`, and a forwarded `pardes '~/x'`.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/src/ninep/pane.zig b/src/ninep/pane.zig
index dc8b4b10..7526075b 100644
--- a/src/ninep/pane.zig
+++ b/src/ninep/pane.zig
@@ -860,7 +860,8 @@ fn writeName(p: *Pardes, req: Req, id: usize, pane: *Pane) Reply {
         "rename not allowed: a terminal is named by its shell's directory; cd there, or Tty in another"
     else
         "rename not allowed: an image or PDF is named by the file it shows");
-    const full = std.fs.path.resolvePosix(p.scratch.allocator(), &.{ pardes.Pardes.paneDir(pane), name }) catch
+    var home_buf: [4096]u8 = undefined;
+    const full = std.fs.path.resolvePosix(p.scratch.allocator(), &.{ pardes.Pardes.paneDir(pane), fs.expandHome(name, &home_buf) }) catch
         return Reply.fail(req.tag, E.NOMEM);
     if (!std.fs.path.isAbsolute(full) or full.len >= 4096) return tree.failText(req.tag, E.INVAL, "invalid file name: longer than a path may be");
     nameBuffer(p, id, full, false) catch |err| return Reply.fail(req.tag, switch (err) {