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0ee1f7529b
This was a bit of a PITA to run down; the essence of the problem was that the shaper was returning an x_advance of 0 for U+3000, which caused wezterm's shaping layer to elide that glyph. I eventually tracked down the x_advance to be the result of scaling by an x_scale of 0, which in turn is the result of harfbuzz not knowing the font size. The critical portion of this diff is the line that advises harfbuzz that the font has changed after we've applied the font size. The rest is just stuff to make it easier to debug and verify. This: ``` printf "x\u3000x." ``` Now correctly renders on screen as "x x". fixes: #1161 |
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README.md |
Terminal Wizardry
This is a rust crate that provides a number of support functions for applications interested in either displaying data to a terminal or in building a terminal emulator.
It is currently in active development and subject to fairly wild sweeping changes.
Included functionality:
Surface
models a terminal display and its componentCell
s- Terminal attributes are aware of modern features such as True Color, Hyperlinks and will also support sixel and iterm style terminal graphics display.
Surface
s include a log ofChange
s and an API for consuming and applying deltas. This is a powerful building block for synchronizing screen instances.- Escape sequence parser decodes inscrutable escape sequences and gives them semantic meaning, making the code that uses them clearer. The decoded escapes can be re-encoded, allowing applications to start with the semantic meaning and emit the appropriate escape sequence without embedding obscure binary bytes.
Capabilities
allows probing for terminal capabilities that may not be included in the system terminfo database, and overriding them in an embedding application.Terminal
trait provides an abstraction over unix style ttys and Windows style console APIs.Change
s fromSurface
can be rendered toTerminal
s.Terminal
s allow decoding mouse and keyboard inputs in both blocking or non-blocking mode.Widget
trait allows composition of UI elements at a higher level.LineEditor
implements shell-like line editing functionality.
Windows Support
Termwiz understands how to work with both the legacy console APIs and the new PTY and virtual terminal features available in Windows 10, allowing for true color terminal applications on Windows 10.