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Shell integration: Workaround bash not redrawing multiline prompts

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This commit is contained in:
Kovid Goyal 2021-10-01 09:30:26 +05:30
parent eaa0ec4fc3
commit eeb02ceef4
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GPG Key ID: 06BC317B515ACE7C
3 changed files with 12 additions and 3 deletions
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12
kitty/screen.c
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@ -156,6 +156,7 @@ screen_reset(Screen *self) {
if (self->overlay_line.is_active) deactivate_overlay_line(self);
memset(self->main_key_encoding_flags, 0, sizeof(self->main_key_encoding_flags));
memset(self->alt_key_encoding_flags, 0, sizeof(self->alt_key_encoding_flags));
self->redraws_multiline_prompts = false;
self->last_graphic_char = 0;
self->main_savepoint.is_valid = false;
self->alt_savepoint.is_valid = false;
@ -291,6 +292,7 @@ prevent_current_prompt_from_rewrapping(Screen *self) {
y--;
}
if (y < 0) return;
if (!self->redraws_multiline_prompts && self->cursor->y > (unsigned) y) return; // bash does not redraw multiline prompts
// we have identified a prompt at which the cursor is present, the shell
// will redraw this prompt. However when doing so it gets confused if the
// cursor vertical position relative to the first prompt line changes. This
@ -1921,8 +1923,14 @@ shell_prompt_marking(Screen *self, PyObject *data) {
if (PyUnicode_GET_LENGTH(data) > 0 && self->cursor->y < self->lines) {
Py_UCS4 ch = PyUnicode_READ_CHAR(data, 0);
switch (ch) {
case 'A':
linebuf_mark_line_as_prompt_start(self->linebuf, self->cursor->y); break;
case 'A': {
linebuf_mark_line_as_prompt_start(self->linebuf, self->cursor->y);
size_t l = PyUnicode_GET_LENGTH(data);
if (l > 8) {
DECREF_AFTER_FUNCTION PyObject *q = PyUnicode_FromString(";does_not_redraw_multiline_prompt");
self->redraws_multiline_prompts = (!q || PyUnicode_Find(data, q, 1, PyUnicode_GET_LENGTH(data), 1) < 0);
} else self->redraws_multiline_prompts = true;
} break;
case 'C':
linebuf_mark_line_as_output_start(self->linebuf, self->cursor->y); break;
}

1
kitty/screen.h
View File

@ -131,6 +131,7 @@ typedef struct {
struct {
monotonic_t start, duration;
} ignore_bells;
bool redraws_multiline_prompts;
} Screen;

2
shell-integration/kitty.bash
View File

@ -40,7 +40,7 @@ _ksi_main() {
fi
if [[ "${_ksi_prompt[mark]}" == "y" ]]; then
PS1="\[\e]133;A\a\]$PS1"
PS1="\[\e]133;A;does_not_redraw_multiline_prompt\a\]$PS1"
PS0="\[\e]133;C\a\]$PS0"
fi