diff options
| -rw-r--r-- | docs/fs.md | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -160,8 +160,13 @@ whole, so its last line runs even without a newline (`printf Save > exec`), unless it is a multiple of 4096 bytes: that is where a writer's buffer (stdio, a mount's page cache) filled and cut a line, so its tail waits for the next write or the close. An `Edit` whose `{` or -`a`/`c`/`i` text is still open waits for the next write on that open, and -fails at the close if it never ends (``unmatched `{'``). A line held past +`a`/`c`/`i` text is still open waits for the next write on that open. A +line held to the close (a 4096-multiple write's tail, an `Edit` block never +ended) runs there, and its failure is only in the log, as its `err` record +(``err <serial> ctl: unmatched `{'`` or `a, c or i text not ended by a . +line`): the close itself reports no error, and the write that sent it had +already succeeded. A script that needs a line's result ends the write with +a newline, so the line runs, and fails, with its write. A line held past 1 MiB is refused. **Answers.** Reading `look`, `exec` or `tagexec` answers the serials the |