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author | Jesse Luehrs <doy@tozt.net> | 2019-11-20 13:16:05 -0500 |
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committer | Jesse Luehrs <doy@tozt.net> | 2019-11-20 13:16:05 -0500 |
commit | f5d5f602dba0229335ec44b817c7822c73171e29 (patch) | |
tree | 0f8205ba85d5fee7a5654346106b33a5778fd7b6 /src | |
parent | dc5efa534b80264f2e5a83ab60056c0834925aea (diff) | |
download | vt100-rust-f5d5f602dba0229335ec44b817c7822c73171e29.tar.gz vt100-rust-f5d5f602dba0229335ec44b817c7822c73171e29.zip |
combining characters should also trigger a cursor wrap
this seems pretty weird, but it is what all other terminals i can find
do, so
Diffstat (limited to 'src')
-rw-r--r-- | src/screen.rs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/screen.rs b/src/screen.rs index f28fb90..ec4d204 100644 --- a/src/screen.rs +++ b/src/screen.rs @@ -591,7 +591,16 @@ impl Screen { let width = c.width().unwrap_or(0).try_into().unwrap(); let attrs = self.attrs; - self.grid_mut().col_wrap(width); + // zero width characters still cause the cursor to wrap - this doesn't + // affect which cell they go into (the "previous cell" for both (row, + // max_col + 1) and (row + 1, 0) is (row, max_col)), but does affect + // further movement afterwards - writing an `a` at (row, max_col) + // followed by a crlf puts the cursor at (row + 1, 0), but writing a + // `à` (specifically `a` followed by a combining grave accent - the + // normalized U+00E0 "latin small letter a with grave" behaves the + // same as `a`) at (row, max_col) followed by a crlf puts the cursor + // at (row + 2, 0) + self.grid_mut().col_wrap(if width == 0 { 1 } else { width }); if width == 0 { if pos.col > 0 { |