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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/fs.md | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -728,9 +728,11 @@ missed its target cannot then write at the last one. The three flag files `dirty`, `mark` and `scroll` read `0` or `1` and take `0` or `1`: whether the buffer differs from its file, whether a write pushes an undo point (writing `1` pushes one now), and whether a write scrolls the -pane. Every `data`, `xdata` or `body` write is an undo step of its own -while `mark` is 1; to make a loop's writes one step, write `1` (an undo -point here), then `0`, the writes, then `1` again. +pane. The writes of one open of `data`, `xdata` or `body` are one undo +step while `mark` is 1 (so `printf 'a\nb\n' > data` is one, though a +shell writes it a line at a time), and the next open starts another; to +make a loop's writes one step, write `1` (an undo point here), then `0`, +the writes, then `1` again. One rule for what fails: a write fails whenever what it asked for fails, whether it came to a `ctl` (the root's, a pane's, a column's, a pane's |