diff options
Diffstat (limited to 'src/edit.zig')
| -rw-r--r-- | src/edit.zig | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/edit.zig b/src/edit.zig index 2dc79ab5..5ba46ca7 100644 --- a/src/edit.zig +++ b/src/edit.zig @@ -694,8 +694,19 @@ pub fn insertKey(p: *Pardes, t: *Text, key: Key) void { Key.backspace => { if (t.cur_col > 0) { const line = modal.lineSlice(text, c.row); - const prev = modal.prevGrapheme(line, c.col); - const new = modal.deleteChar(p.gpa, text, .{ .row = c.row, .col = prev }) catch return; + var prev = modal.prevGrapheme(line, c.col); + // in leading blanks, back to the previous indent stop (helix + // dedent): a whole unit when on one, else the part past it + const lead = line[0..@min(c.col, line.len)]; + if (std.mem.indexOfNone(u8, lead, " \t") == null and prev < line.len and line[prev] != '\t') { + var width: usize = 0; + for (lead) |ch| width += if (ch == '\t') modal.INDENT_W else 1; + var drop = width % modal.INDENT_W; + if (drop == 0) drop = modal.INDENT_W; + prev = c.col; + while (drop > 0 and prev > 0 and line[prev - 1] == ' ') : (drop -= 1) prev -= 1; + } + const new = modal.deleteSpan(p.gpa, text, .{ .row = c.row, .col = prev }, c) catch return; setEditText(p, t, new); t.cur_col = @intCast(prev); t.cur_pinned = true; |