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feat: Support kitty and win32-input-mode protocols (fixes #30) #34

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Merged
gdamore merged 2 commits into from
Dec 9, 2025
Merged

feat: Support kitty and win32-input-mode protocols (fixes #30) #34

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eaabf4e
feat: Support kitty and win32-input-mode protocols (fixes #30)
gdamore Dec 9, 2025
dc16b41
fix: win32 input mode setting
gdamore Dec 9, 2025
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31 changes: 30 additions & 1 deletion source/dcell/ttyscreen.d
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,12 @@ class TtyScreen : Screen
string saveTitle = "\x1b[22;2t";
string restoreTitle = "\x1b[23;2t";
string setTitle = "\x1b[>2t\x1b]2;%s\x1b\\";

// three advanced keyboard protocols:
// - xterm modifyOtherKeys (uses CSI 27 ~ )
// - kitty csi-u (uses CSI u)
// - win32-input-mode (uses CSI _)
string enableCsiU = "\x1b[>4;2m" ~ "\x1b[>1u" ~ "\x1b[?9001h";
string disableCsiU = "\x1b[?9001l" ~ "\x1b[<u" ~ "\x1b[>4;0m";
// number of colors - again this can be overridden.
// Typical values are 0 (monochrome), 8, 16, 256, and 1<<24.
// There are some oddballs like xterm-88color. The first
Expand Down Expand Up @@ -179,6 +184,26 @@ class TtyScreen : Screen
vt.numColors = 0;
}

version (Windows)
{
// If we don't have a $TERM (e.g. Windows Terminal), or we are dealing with WezTerm
// (which cannot mix modes), then only support win32-input-mode.
if (term == "" || environment.get("TERM_PROGRAM") == "WezTerm")
{
vt.enableCsiU = "\x1b[?9001h";
vt.disableCsiU = "\x1b[?9001l";
}
}
else
{
// WezTerm is unhappy if we ask for other modes
if (environment.get("TERM_PROGRAM") == "WezTerm")
{
vt.enableCsiU = "\x1b[>1u";
vt.disableCsiU = "\x1b[<u";
}
}

if (legacy)
{
vt.enterURL = "";
Expand All @@ -187,6 +212,8 @@ class TtyScreen : Screen
vt.setTitle = "";
vt.restoreTitle = "";
vt.saveTitle = "";
vt.enableCsiU = "";
vt.disableCsiU = "";
}
}

Expand All @@ -204,6 +231,7 @@ class TtyScreen : Screen
ti.raw();
puts(vt.hideCursor);
puts(vt.disableAutoMargin);
puts(vt.enableCsiU);
puts(vt.enterKeypad);
puts(vt.enableAltChars);
puts(vt.clear);
Expand Down Expand Up @@ -242,6 +270,7 @@ class TtyScreen : Screen
puts(vt.disablePaste);
enableMouse(MouseEnable.disable);
puts(vt.disableFocus);
puts(vt.disableCsiU);
flush();
stopping.set(true);
puts(vt.requestDA); // request DA to wake up the reader
Expand Down