Let the keyboard reach a tag's path, read-only

The tag's computed path, dirty marker and page were out of the keyboard's
reach: its cursor lived in the text after them. It now lives in the tag as
shown, as in acme where the name is ordinary text at the start of the tag, so
`0` goes to the line's start and motions select and yank the path. The path
stays read-only: an edit that would change it is refused and leaves the
cursor where it was, and typing into a file's path drafts a new name as a
click on it does. Sync moves the tag's positions when the prefix changes
length, so a rename or the dirty marker still never moves the cursor off the
text after it.

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

1 files changed, 9 insertions, 6 deletions

diff --git a/docs/tags.md b/docs/tags.md
index 7c385c08..810ae010 100644
--- a/docs/tags.md
+++ b/docs/tags.md
@@ -51,11 +51,13 @@ a row per line, up to eight: a pane's tag leaves its body at least one row
 and a collapsed pane shows only the first line; the column and workspace
 tags take no more than a third of the screen, and the panes below move down
 to make room. The path, the dirty marker and a PDF's page at the start of a
-pane tag are computed, never stored: the tag's cursor, selections and undo
-live in the text after them, so a rename or a save never moves the cursor.
-The mouse still sees the whole line -- a sweep selects across the path and
-the commands, and Look and Exec work on either -- but the keyboard moves only
-in the tag's own text: `0` goes to its start, not the path's.
+pane tag are computed, never stored, and read-only. The keyboard reaches
+them as the mouse does: `0` goes to the line's start, the path's, as in
+acme, and motions select and yank across the path and the commands. An edit
+that would change them is refused and leaves the cursor where it was; typing
+into a file's path instead drafts a new name, as clicking it does. When they
+grow or shrink (a rename, the dirty marker, a PDF's page) the cursor keeps
+its place in the text after them.
 
 Left-click a tag or a header to type into it at the click, in insert mode;
 tags reveal the caret horizontally when text is wider than their column.
@@ -93,7 +95,8 @@ generated right-alignment padding. Intentionally customized spacing is kept.
 
 ## File names
 
-Clicking a file pane's name starts a draft of it, typed into at the click.
+Clicking a file pane's name, or typing into it from the tag, starts a draft
+of it, typed into where it was clicked or typed.
 Enter or Tab confirms the new buffer name; Escape or leaving the pane
 cancels the draft. Confirmation changes the
 buffer's save target and marks it unsaved. It does **not** rename, create or