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, 5 insertions, 2 deletions

diff --git a/src/main.zig b/src/main.zig
index 576efc8e..dfeed52d 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -407,7 +407,7 @@ fn nativeMain(init: std.process.Init) !void {
         // itself, which is what a right click in that pane would have been.
         var look_buf: [64]u8 = undefined;
         const look = try std.fmt.bufPrint(&look_buf, "/pane/{d}/look", .{parent.serial});
-        const word = positional orelse {
+        const typed_word = positional orelse {
             var tag_buf: [64]u8 = undefined;
             const tag = try std.fmt.bufPrint(&tag_buf, "/pane/{d}/tag", .{parent.serial});
             const contents = ninep_io.Client.read(arena, parent.dial, tag, tag) catch |err| Refuse.with(init.io, tag, err);
@@ -415,7 +415,10 @@ fn nativeMain(init: std.process.Init) !void {
             try std.Io.File.stderr().writeStreamingAll(init.io, nested_text);
             std.process.exit(1);
         };
-        if (std.mem.indexOfAny(u8, word, "\r\n") != null) Refuse.with(init.io, "a file name", error.NotOneLine);
+        if (std.mem.indexOfAny(u8, typed_word, "\r\n") != null) Refuse.with(init.io, "a file name", error.NotOneLine);
+        // `pardes '~/x'`, quoted so the shell left it: home, as a look's.
+        var home_buf: [4096]u8 = undefined;
+        const word = pardes.filesystem.expandHome(typed_word, &home_buf);
         const target = @import("look.zig").parsePathLine(word);
         var realbuf: [4096]u8 = undefined;
         var newbuf: [4096]u8 = undefined;