Add shrink equivalent of extend_to_line_bounds #2450
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EpocSquadron
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I fixed the potential for panic. I originally had this so that the shrink would leave the cursor on the character before the EOL, but this led to some interesting bugs where empty lines would be trimmed from the selection even though in spirit the whole line is part of the selection. Including the EOL in the selection resolves this, while also mirroring the behavior of |
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I just gave this a try and it looks good: I can't find any edge cases. I think |
| doc.set_selection( | ||
| view.id, | ||
| doc.selection(view.id).clone().transform(|range| { | ||
| let text = doc.text(); | ||
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| let (start_line, end_line) = range.line_range(text.slice(..)); | ||
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| // Do nothing if the selection is within one line to prevent | ||
| // conditional logic for the behavior of this command | ||
| if start_line == end_line { | ||
| return range; | ||
| } | ||
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| let mut start = text.line_to_char(start_line); | ||
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| // line_to_char gives us the start position of the line, so | ||
| // we need to get the start position of the next line. In | ||
| // the editor, this will correspond to the cursor being on | ||
| // the EOL whitespace charactor, which is what we want. | ||
| let mut end = text.line_to_char((end_line + 1).min(text.len_lines())); | ||
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| if start != range.from() { | ||
| start = text.line_to_char((start_line + 1).min(text.len_lines())); | ||
| } | ||
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| if end != range.to() { | ||
| end = text.line_to_char(end_line); | ||
| } | ||
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| if range.anchor <= range.head { | ||
| Range::new(start, end) | ||
| } else { | ||
| Range::new(end, start) | ||
| } | ||
| }), | ||
| ); |
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It would be better to move this into selection variable to reduce one layer of nesting.
the-mikedavis
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* Add shrink equivalent of extend_to_line_bounds * Add a check for being past rope end in end position calc * Include the EOL character in calculations * Bind to `A-x` for now * Document new keybind
* Add shrink equivalent of extend_to_line_bounds * Add a check for being past rope end in end position calc * Include the EOL character in calculations * Bind to `A-x` for now * Document new keybind
Implements #2002, with a difference in that using the command when the selection spans only a single line will not result in conditional logic.
I believe there's some holes in the logic that could open to a panic so marking as draft until I can address.