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bash shell integration: Handle both literal and escaped newlines in PS1

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Kovid Goyal 2022-02-22 18:30:20 +05:30
parent b59212696a
commit dac9b07f16
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GPG Key ID: 06BC317B515ACE7C
2 changed files with 25 additions and 2 deletions
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20
kitty_tests/shell_integration.py
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@ -150,3 +150,23 @@ PS1="{ps1}"
pty.wait_till(lambda: pty.screen_contents().count(ps1) == 3)
self.ae('40', str(pty.screen.line(pty.screen.cursor.y - 1)))
self.ae(ps1 + 'echo $COLUMNS', str(pty.screen.line(pty.screen.cursor.y - 2)))
for ps1 in ('line1\\nline\\2\\prompt> ', 'line1\nprompt> ', 'line1\\nprompt> ',):
with self.subTest(ps1=ps1), self.run_shell(
shell='bash', rc=f'''
PS1="{ps1}"
''') as pty:
ps1 = ps1.replace('\\n', '\n')
pty.wait_till(lambda: pty.screen_contents().count(ps1) == 1)
pty.send_cmd_to_child('echo test')
pty.wait_till(lambda: pty.screen_contents().count(ps1) == 2)
self.ae(pty.screen_contents(), f'{ps1}echo test\ntest\n{ps1}')
pty.write_to_child(r'echo $COLUMNS')
pty.set_window_size(rows=20, columns=40)
pty.process_input_from_child()
pty.wait_till(redrawn)
self.ae(ps1.splitlines()[-1] + 'echo $COLUMNS', str(pty.screen.line(pty.screen.cursor.y)))
pty.write_to_child('\r')
pty.wait_till(lambda: pty.screen_contents().count(ps1) == 3)
self.ae('40', str(pty.screen.line(pty.screen.cursor.y - len(ps1.splitlines()))))
self.ae(ps1.splitlines()[-1] + 'echo $COLUMNS', str(pty.screen.line(pty.screen.cursor.y - 1 - len(ps1.splitlines()))))

7
shell-integration/bash/kitty.bash
View File

@ -58,14 +58,17 @@ _ksi_main() {
PS1=${PS1//\\\[\\e\]133;k;start_suffix_kitty\\a\\\]*end_suffix_kitty\\a\\\]}
fi
if [[ -n "${_ksi_prompt[ps1]}" ]]; then
if [[ "${_ksi_prompt[mark]}" == "y" && "${PS1}" == *"\n"* ]]; then
if [[ "${_ksi_prompt[mark]}" == "y" && ( "${PS1}" == *"\n"* || "${PS1}" == *$'\n'* ) ]]; then
local oldval=$(builtin shopt -p extglob)
builtin shopt -s extglob
# bash does not redraw the leading lines in a multiline prompt so
# mark the last line as a secondary prompt. Otherwise on resize the
# lines before the last line will be erased by kitty.
# the first part removes everything from the last \n onwards
# the second part appends a newline with the secondary marking
# the third part appends everything after the last newline
PS1=${PS1%'\n'*}${_ksi_prompt[secondary_prompt]}${PS1##*'\n'}
PS1=${PS1%@('\n'|$'\n')*}${_ksi_prompt[secondary_prompt]}${PS1##*@('\n'|$'\n')};
eval "$oldval"
fi
PS1="${_ksi_prompt[ps1]}$PS1"
fi