diff options
Diffstat (limited to 'docs/design.typ')
| -rw-r--r-- | docs/design.typ | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/docs/design.typ b/docs/design.typ index 8e5f7e6e..234c3692 100644 --- a/docs/design.typ +++ b/docs/design.typ @@ -790,12 +790,15 @@ A tag holds any number of lines; a pane's tag takes a row per line up to A pane's tag shows a live prefix (path, dirty marker, PDF page) before the text it owns, and that prefix is computed at every read, never stored -(`tagline.tagPrefix`). The Text's coordinates are offsets into its own text -alone, so a rename or a save never moves its cursor. The one translation -point is the whole line as shown: render, the mouse, Look, Exec and the 9P -`tag` file see prefix ++ text, while keyboard motions and edits see only the -text. Editing the path is a separate draft (`Pane.prompt = .name`) committed -by Enter, since a buffer's name is not text it owns. +(`tagline.tagPrefix`). Everything sees the whole line as shown, prefix ++ +text: render, the mouse, Look, Exec, the 9P `tag` file and the keyboard, +whose motions reach the path as acme's do. The prefix is read-only: an edit +installs only what follows it, and one that would change it is refused +(`edit.setEditText`, `Text.refused`). Because the prefix is computed, sync +moves the tag's positions with it when its length changes (`Pane.tag_lead`). +Editing the path is a separate draft (`Pane.prompt = .name`) committed by +Enter, since a buffer's name is not text it owns; a click or a key typed +into it starts one. The tag's text is bounded by `limits.max_tag_tail`: the 9P `tag` file and a dump reader refuse input that does not fit rather than truncating it. |