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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/fs.md | 19 |
1 files changed, 14 insertions, 5 deletions
@@ -218,11 +218,20 @@ the same open (factotum's `rpc` shape): write the line, then read `exit N` once the command has ended and the shell is back at a prompt, followed by what it printed. The output is what the screen showed between the command's start and end marks: stderr interleaved, `\r` progress collapsed to its last -state, no colour; a full-screen program (vim, less) leaves none, and rows a -program redrew above its start are missed. Only its last 64 KiB are kept, -from a line start, and the header then reads `exit N cut M` (M bytes left -out), or `exit N cut` when its start scrolled out of the history. The header -is always the whole first line. It reads +state, no colour, tabs as the spaces they drew, trailing spaces trimmed and +trailing blank lines dropped (`printf 'a\n\n\n'` answers `a`), leading +whitespace kept; a program on the alternate screen (vim, less, htop) leaves +none, and rows a program redrew above its start are missed. A bash job notice +printed before its PROMPT_COMMAND lands in the next run's output. Only its +last 64 KiB are kept, from a line start, and the header then reads `exit N +cut M` (M bytes left out). `exit N cut`, with no count, says the output's +start is not there to read: it scrolled out of the history, the command +erased it (`clear`, a reset), a start or end mark came on the alternate +screen, or the command printed more than 8192 rows, of which only the last +are read so that the answer costs the editor a bounded amount. `exit ?` is a +command whose end mark carried no status, which is not a success; `error out +of memory` is an answer that could not be made. The header is always the +whole first line. It reads `busy` at once when a command is running, text is typed at the prompt or the shell has not drawn its first prompt; `error not run` when the shell refused the line without running it (a fish syntax error; the line is taken back off |