diff options
Diffstat (limited to 'src/ninep/pane.zig')
| -rw-r--r-- | src/ninep/pane.zig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/ninep/pane.zig b/src/ninep/pane.zig index 42c0c48e..4b34cf96 100644 --- a/src/ninep/pane.zig +++ b/src/ninep/pane.zig @@ -24,6 +24,12 @@ const Node = tree.Node; /// Filesystem state a pane carries beside its editor state. pub const State = struct { + /// The range `data` and `xdata` read and write through. acme clears it + /// when the first client opens `addr` (editors/acme/xfid.c:105), which + /// suits a client that holds the fid open and leaves a shell reading back + /// `0 0` from the address it just wrote. Here it is the pane's own + /// register, cleared by truncating the file, so that `cp addr dot` and + /// `cat addr` answer what was written. addr: Range = .{}, limit: ?Range = null, readers: u16 = 0, @@ -458,7 +464,7 @@ fn writeRange(p: *Pardes, req: Req, id: usize, pane: *Pane, file: PaneFile) Repl const pf = &p.fs.panes[id]; const text = bodyOf(pane); clampAddr(pf, text.len); - const r = rangeOf(pf, text, req.data) orelse return Reply.fail(req.tag, E.INVAL); + const r = rangeOf(pf, text, req.data) orelse return tree.failText(req.tag, E.INVAL, tree.e_bad_addr); switch (file) { .addr => pf.addr = r, .limit => pf.limit = r, |