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Diffstat (limited to 'docs/fs.md')
| -rw-r--r-- | docs/fs.md | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -541,7 +541,11 @@ line on an open whose command still runs fails the write. `exec zsh` or a continuation prompt never reports an end; cancel the read. A read of `run` waits in pardes, so through 9ns it needs 9ns's concurrent requests or it holds up the rest of the mount. A record -longer than a read comes in pieces, so a shell's `read` loop works. `tail -f` +longer than a read comes in pieces, so a shell's `read` loop works: `exec +3<>$m/log; echo follow >&3; while read -r line <&3; do ...; done`. bash's +`read` takes a chunk, keeps one line and seeks back to just past it; a +followed log, `event` and `pty/data` answer a read at an offset inside +their last answer from that answer again, so no record is lost. `tail -f` never writes `follow`, so it sees nothing new: use the follow open instead. `/screen` returns JSON with `cols`, `rows`, `cursor`, a `styles` table, and row-major `cells` of `[grapheme, style_index]`. Each open freezes one frame until close. A |