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Shell: Tab completes a path on the SD card (#67)
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Past the command's name, Tab completes the word being typed as a path: a
folder keeps its slash to go on from, a file completed whole gets a space,
several candidates are listed. Any case typed, the name's own is taken.
After a file command the first slash is understood (`cat no` is /no).
The folder is read on the storage task, bounded to 400 entries looked at
and 24 candidates.

489 host tests (2 new). Checked on the device: a folder, a file inside it,
several candidates, no slash, another case, nothing matching.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
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twisla
2026-10-07 12:03:44 +02:00
co-authored by Claude Opus 5.5
parent 7b5df713ad
commit d17d10948d
12 changed files with 184 additions and 14 deletions
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README.md
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@@ -158,7 +158,7 @@ A note holds up to 16 KB while it's edited. A bigger text file opens read-only i
## Shell
The Shell App (docs/milestones/S1.md) runs the commands below on the device's own screen and keyboard: no PC, no cable, no Wi-Fi. **It shows the replies to its own commands and nothing else**: the console knows who each line is printed for, so a listing read by another task a moment later is still the Shell's, and what USB or the Debug Console asked for is not. Ctrl+b shows everything instead. Tab completes a command's name, Fn with up and down recalls earlier lines, Alt with up and down scrolls back. **An App's name with a capital opens it** (`Notes`, `Irc`, `Wifi`, `Gnss`, `Gemini`, `Lora`, `Storage`, `System`, `Settings`), from the consoles too. `rm` is Unix's, with a question: a folder needs `-r`; a file, or a folder with something in it, is asked about unless `-f` (`rm -rf`); an empty folder goes without a word. `clear` empties the screen and `quit` leaves. It is trusted like the USB port: `debug on` and `debug token` work from it. It uses about 7 KB of memory while it is open, and none otherwise.
The Shell App (docs/milestones/S1.md) runs the commands below on the device's own screen and keyboard: no PC, no cable, no Wi-Fi. **It shows the replies to its own commands and nothing else**: the console knows who each line is printed for, so a listing read by another task a moment later is still the Shell's, and what USB or the Debug Console asked for is not. Ctrl+b shows everything instead. Tab completes a command's name and, past it, a path on the SD card (`ls /no` gives `ls /notes/`), Fn with up and down recalls earlier lines, Alt with up and down scrolls back. **An App's name with a capital opens it** (`Notes`, `Irc`, `Wifi`, `Gnss`, `Gemini`, `Lora`, `Storage`, `System`, `Settings`), from the consoles too. `rm` is Unix's, with a question: a folder needs `-r`; a file, or a folder with something in it, is asked about unless `-f` (`rm -rf`); an empty folder goes without a word. `clear` empties the screen and `quit` leaves. It is trusted like the USB port: `debug on` and `debug token` work from it. It uses about 7 KB of memory while it is open, and none otherwise.
## Development aids