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LibLine: Never assume a 25x80 terminal

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Just reuse the lldb hack if the normal stderr ioctl fails for any
reason, and read the size directly off /dev/tty.
This commit is contained in:
Ali Mohammad Pur 2022-02-28 07:31:18 +03:30 committed by Andreas Kling
parent b05af48d80
commit 1fcef99ff7
Notes: sideshowbarker 2024-07-17 17:53:07 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/1fcef99ff7
Pull-request: https://github.com/SerenityOS/serenity/pull/12903
1 changed files with 9 additions and 14 deletions
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7
Userland/Libraries/LibLine/Editor.cpp
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@ -218,11 +218,7 @@ void Editor::ensure_free_lines_from_origin(size_t count)
void Editor::get_terminal_size()
{
struct winsize ws;
if (ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) < 0) {
m_num_columns = 80;
m_num_lines = 25;
} else {
ioctl(STDERR_FILENO, TIOCGWINSZ, &ws);
if (ws.ws_col == 0 || ws.ws_row == 0) {
// LLDB uses ttys which "work" and then gives us a zero sized
// terminal which is far from useful
@ -233,7 +229,6 @@ void Editor::get_terminal_size()
}
m_num_columns = ws.ws_col;
m_num_lines = ws.ws_row;
}
}
void Editor::add_to_history(String const& line)