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Notes: edit a text file of any size (#47)
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The editor held the whole note in memory and stopped at 16 KB. It now keeps
a window of the file around the cursor, and the rest on the card as a list
of pieces (notes::NoteDocument). Memory with a note open is what it was.

Up to 64 KB a save rewrites the file, as before. Above, the five-second
save appends what changed to <note>.edit, and the file is rewritten on
leaving the note, with a progress bar. After a power cut, opening the note
picks the edit up where it was saved; a rewrite cut short is finished or
dropped, never half applied.

Also: Ctrl with Fn+Up/Down go to the start and end of the note; the
consoles' `key` command takes ctrl-, alt- and shift-; the Storage App's
`e` no longer refuses a big file.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
This commit is contained in:
twisla
2026-10-07 15:39:45 +02:00
co-authored by Claude Opus 5.5
parent 10c5291e15
commit de8af6ed92
21 changed files with 1681 additions and 111 deletions
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site/content/dev/debug/drive-the-ui.md
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@@ -20,7 +20,7 @@ Two things to know before you use them:
1. **A name `key` does not know is `select`.** `key sleect` presses Enter. A single character is typed as that character; anything else that is not a known name is treated as Enter. Check what you type.
2. **A key that wakes a dark screen only wakes it.** The device's power policy swallows the key press that turns the screen back on, as it does for the real keyboard: the first `key` after the screen went off does nothing else. Send `key back` (harmless) first, or keep the screen on with the `normal` and `short` commands below.
`Fn` combinations, modifiers and the compose key have no command: the arrows are `key up|down|left|right`, and `key back` is the back key (`` ` `` on the device). Text is typed one character at a time.
**Ctrl, Alt and Shift** go before the name: `key ctrl-down`, `key alt-up`, `key ctrl-b`, `key shift-alt-down`. `Fn` combinations and the compose key have no command: the arrows are `key up|down|left|right` (what `Fn` with `;` `.` `,` `/` gives on the device), and `key back` is the back key (`` ` `` on the device). Text is typed one character at a time.
**`key help` opens the help panel** (<kbd>Fn</kbd>+<kbd>h</kbd> on the device): the keys of the screen that is showing. A screenshot of it is the quickest way to learn what a screen accepts, and it is how every screen's list was checked. Any key but the arrows closes it.