cf76b5ce1
Denys Vlasenko
2014-10-02
Subject
getty: set tty attrs so that control chars are shown as ^c
Binary
No binary (build failed)
Architecture & Compiler Flags
—
Build Log
(log yok)
Commit Diff GitHub →
loginutils/getty.c+9 -8
| @@ -334,18 +334,19 @@ static void finalize_tty_attrs(void) | |
| * observed to improve backspacing through Unicode chars | |
| */ | |
| - | /* line buffered input (NL or EOL or EOF chars end a line); |
| - | * recognize INT/QUIT/SUSP chars; |
| - | * echo input chars; |
| - | * echo BS-SP-BS on erase character; |
| - | * echo kill char specially, not as ^c (ECHOKE controls how exactly); |
| - | * erase all input via BS-SP-BS on kill char (else go to next line) |
| + | /* ICANON line buffered input (NL or EOL or EOF chars end a line); |
| + | * ISIG recognize INT/QUIT/SUSP chars; |
| + | * ECHO echo input chars; |
| + | * ECHOE echo BS-SP-BS on erase character; |
| + | * ECHOK echo kill char specially, not as ^c (ECHOKE controls how exactly); |
| + | * ECHOKE erase all input via BS-SP-BS on kill char (else go to next line) |
| + | * ECHOCTL Echo ctrl chars as ^c (else echo verbatim: |
| + | * e.g. up arrow emits "ESC-something" and thus moves cursor up!) |
| */ | |
| - | G.tty_attrs.c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE; |
| + | G.tty_attrs.c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE | ECHOCTL; |
| /* Other bits in c_lflag: | |
| * XCASE Map uppercase to \lowercase [tried, doesn't work] | |
| * ECHONL Echo NL even if ECHO is not set | |
| - | * ECHOCTL Echo ctrl chars as ^c (else don't echo) - maybe set this? |
| * ECHOPRT On erase, echo erased chars | |
| * [qwe<BS><BS><BS> input looks like "qwe\ewq/" on screen] | |
| * NOFLSH Don't flush input buffer after interrupt or quit chars | |