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Diffstat (limited to 'docs/fs.md')
| -rw-r--r-- | docs/fs.md | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -518,12 +518,13 @@ A write of command lines -- to `look`, `exec`, `tagexec`, a `ctl` of the root, a pane or a column, or a column's `exec` -- runs each line once it is whole: a mount cuts a big write at its message size (4 KiB through the kernel's, 8 KiB from a client that asks), anywhere, and each piece comes as -a write of its own, so the open keeps a last line with no newline yet, or -an Edit block whose text has not ended, until its next write, and runs it -then; what is left when it closes runs at the close -- so a line written -with no newline (`printf Save > exec`) runs only as the file closes, after -the write has been answered, and its failure is in the log alone: end each -line with its newline to have the write itself fail -- where an Edit block +a write of its own. A write that fills its piece may go on in the next, so +the open keeps its last line with no newline until then; a write shorter +than a piece is the whole of what was written, as acme takes each write, so +its last line runs with it even with no newline (`printf Save > exec`), and +a failure is that write's. Only what needs more is held: an Edit block +whose `{` or `a`/`c`/`i` text has not ended waits for its next write, and +what is left when the file closes runs at the close -- where an Edit block whose `{` or `a`/`c`/`i` text never ended fails and changes nothing (``unmatched `{'``, or `a, c or i text not ended by a . line`, logged as an `err`): sam takes the end of input for a `.`, but a block that reaches Edit |