tweaks: pass first byte of sequence directly to the decoding function
Don't bother stuffing it back into the keyboard buffer when it will be taken out again straight afterward.master
Benno Schulenberg
parent
5fab1e6754
commit
2c8c061e67
205
src/winio.c
205
src/winio.c
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@ -332,28 +332,28 @@ int arrow_from_ABCD(int letter)
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* keypad values, into their corresponding key values. These sequences
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* are generated when the keypad doesn't support the needed keys.
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* Assume that Escape has already been read in. */
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int convert_sequence(const int *seq, size_t length, int *consumed)
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int convert_sequence(int first, const int *seq, size_t length, int *consumed)
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{
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*consumed = 2;
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*consumed = 1;
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if (seq[0] == 'O') {
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switch (seq[1]) {
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if (first == 'O') {
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switch (seq[0]) {
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case '1':
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if (length > 4 && seq[2] == ';') {
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*consumed = 5;
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switch (seq[3]) {
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if (length > 3 && seq[1] == ';') {
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*consumed = 4;
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switch (seq[2]) {
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case '2':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc O 1 ; 2 A == Shift-Up on Terminal. */
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case 'B': /* Esc O 1 ; 2 B == Shift-Down on Terminal. */
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case 'C': /* Esc O 1 ; 2 C == Shift-Right on Terminal. */
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case 'D': /* Esc O 1 ; 2 D == Shift-Left on Terminal. */
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shift_held = TRUE;
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return arrow_from_ABCD(seq[4]);
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return arrow_from_ABCD(seq[3]);
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}
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break;
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case '5':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc O 1 ; 5 A == Ctrl-Up on Terminal. */
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return CONTROL_UP;
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case 'B': /* Esc O 1 ; 5 B == Ctrl-Down on Terminal. */
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@ -374,13 +374,13 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case '6': /* Shift+Ctrl */
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case '7': /* Alt+Ctrl */
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case '8': /* Shift+Alt+Ctrl */
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if (length > 2) {
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*consumed = 3;
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if (length > 1) {
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*consumed = 2;
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/* Do not accept multiple modifiers. */
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if (seq[1] == '4' || seq[1] > '5')
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if (seq[0] == '4' || seq[0] > '5')
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return FOREIGN_SEQUENCE;
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#ifndef NANO_TINY
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switch (seq[2]) {
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switch (seq[1]) {
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case 'A': /* Esc O 5 A == Ctrl-Up on Haiku. */
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return CONTROL_UP;
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case 'B': /* Esc O 5 B == Ctrl-Down on Haiku. */
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@ -394,14 +394,14 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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/* Translate Shift+digit on the keypad to the digit
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* (Esc O 2 p == Shift-0, ...), modifier+operator to
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* the operator, and modifier+Enter to CR. */
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return (seq[2] - 0x40);
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return (seq[1] - 0x40);
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}
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break;
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case 'A': /* Esc O A == Up on VT100/VT320. */
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case 'B': /* Esc O B == Down on VT100/VT320. */
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case 'C': /* Esc O C == Right on VT100/VT320. */
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case 'D': /* Esc O D == Left on VT100/VT320. */
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return arrow_from_ABCD(seq[1]);
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return arrow_from_ABCD(seq[0]);
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case 'F': /* Esc O F == End on old xterm. */
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return KEY_END;
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case 'H': /* Esc O H == Home on old xterm. */
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@ -419,7 +419,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case 'W': /* Esc O W == F8 on Mach console. */
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case 'X': /* Esc O X == F9 on Mach console. */
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case 'Y': /* Esc O Y == F10 on Mach console. */
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return KEY_F(seq[1] - 'O');
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return KEY_F(seq[0] - 'O');
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case 'a': /* Esc O a == Ctrl-Up on rxvt/Eterm. */
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return CONTROL_UP;
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case 'b': /* Esc O b == Ctrl-Down on rxvt/Eterm. */
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@ -464,41 +464,41 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case 'y': /* Esc O y == PageUp (9) on the same. */
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return KEY_PPAGE;
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}
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} else if (seq[0] == '[') {
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if (seq[1] < '9')
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*consumed = 3;
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switch (seq[1]) {
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} else if (first == '[') {
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if (seq[0] < '9')
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*consumed = 2;
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switch (seq[0]) {
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case '1':
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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/* Esc [ 1 ~ == Home on VT320/Linux console. */
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return KEY_HOME;
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else if (length > 3 && seq[3] == '~') {
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*consumed = 4;
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switch (seq[2]) {
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else if (length > 2 && seq[2] == '~') {
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*consumed = 3;
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switch (seq[1]) {
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case '1': /* Esc [ 1 1 ~ == F1 on rxvt/Eterm. */
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case '2': /* Esc [ 1 2 ~ == F2 on rxvt/Eterm. */
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case '3': /* Esc [ 1 3 ~ == F3 on rxvt/Eterm. */
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case '4': /* Esc [ 1 4 ~ == F4 on rxvt/Eterm. */
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case '5': /* Esc [ 1 5 ~ == F5 on xterm/rxvt/Eterm. */
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return KEY_F(seq[2] - '0');
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return KEY_F(seq[1] - '0');
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case '7': /* Esc [ 1 7 ~ == F6 on VT220/VT320/
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* Linux console/xterm/rxvt/Eterm. */
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case '8': /* Esc [ 1 8 ~ == F7 on the same. */
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case '9': /* Esc [ 1 9 ~ == F8 on the same. */
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return KEY_F(seq[2] - '1');
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return KEY_F(seq[1] - '1');
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}
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} else if (length > 4 && seq[2] == ';') {
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} else if (length > 3 && seq[1] == ';') {
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/* <-<-<-<-<-<-<- */
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*consumed = 5;
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switch (seq[3]) {
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*consumed = 4;
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switch (seq[2]) {
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case '2':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc [ 1 ; 2 A == Shift-Up on xterm. */
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case 'B': /* Esc [ 1 ; 2 B == Shift-Down on xterm. */
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case 'C': /* Esc [ 1 ; 2 C == Shift-Right on xterm. */
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case 'D': /* Esc [ 1 ; 2 D == Shift-Left on xterm. */
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shift_held = TRUE;
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return arrow_from_ABCD(seq[4]);
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return arrow_from_ABCD(seq[3]);
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#ifndef NANO_TINY
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case 'F': /* Esc [ 1 ; 2 F == Shift-End on xterm. */
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return SHIFT_END;
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@ -510,7 +510,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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#ifndef NANO_TINY
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case '9': /* To accommodate iTerm2 in "xterm mode". */
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case '3':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc [ 1 ; 3 A == Alt-Up on xterm. */
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return ALT_UP;
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case 'B': /* Esc [ 1 ; 3 B == Alt-Down on xterm. */
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@ -524,7 +524,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case '4':
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/* When the arrow keys are held together with Shift+Meta,
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* act as if they are Home/End/PgUp/PgDown with Shift. */
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc [ 1 ; 4 A == Shift-Alt-Up on xterm. */
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return SHIFT_PAGEUP;
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case 'B': /* Esc [ 1 ; 4 B == Shift-Alt-Down on xterm. */
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@ -537,7 +537,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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break;
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#endif
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case '5':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc [ 1 ; 5 A == Ctrl-Up on xterm. */
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return CONTROL_UP;
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case 'B': /* Esc [ 1 ; 5 B == Ctrl-Down on xterm. */
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@ -554,7 +554,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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break;
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#ifndef NANO_TINY
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case '6':
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switch (seq[4]) {
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switch (seq[3]) {
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case 'A': /* Esc [ 1 ; 6 A == Shift-Ctrl-Up on xterm. */
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return shiftcontrolup;
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case 'B': /* Esc [ 1 ; 6 B == Shift-Ctrl-Down on xterm. */
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@ -572,19 +572,19 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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#endif
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}
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/* ->->->->->->-> */
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} else if (length > 5 && seq[3] == ';' && seq[5] == '~')
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} else if (length > 4 && seq[2] == ';' && seq[4] == '~')
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/* Esc [ 1 n ; 2 ~ == F17...F20 on some terminals. */
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*consumed = 6;
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*consumed = 5;
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#ifdef USE_SLANG
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else if (length == 4 && seq[3] == ';')
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else if (length == 3 && seq[2] == ';')
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/* Discard broken sequences that Slang produces. */
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*consumed = 4;
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*consumed = 3;
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#endif
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break;
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case '2':
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if (length > 3 && seq[3] == '~') {
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*consumed = 4;
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switch (seq[2]) {
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if (length > 2 && seq[2] == '~') {
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*consumed = 3;
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switch (seq[1]) {
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case '0': /* Esc [ 2 0 ~ == F9 on VT220/VT320/
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* Linux console/xterm/rxvt/Eterm. */
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return KEY_F(9);
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@ -595,35 +595,35 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case '4': /* Esc [ 2 4 ~ == F12 on the same. */
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return KEY_F(12);
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}
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} else if (length > 2 && seq[2] == '~')
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} else if (length > 1 && seq[1] == '~')
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/* Esc [ 2 ~ == Insert on VT220/VT320/
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* Linux console/xterm/Terminal. */
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return KEY_IC;
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else if (length > 4 && seq[2] == ';' && seq[4] == '~') {
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else if (length > 3 && seq[1] == ';' && seq[3] == '~') {
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/* Esc [ 2 ; x ~ == modified Insert on xterm. */
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*consumed = 5;
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*consumed = 4;
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#ifndef NANO_TINY
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if (seq[3] == '3')
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if (seq[2] == '3')
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return ALT_INSERT;
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#endif
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}
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else if (length > 5 && seq[3] == ';' && seq[5] == '~')
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else if (length > 4 && seq[2] == ';' && seq[4] == '~')
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/* Esc [ 2 n ; 2 ~ == F21...F24 on some terminals. */
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*consumed = 6;
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*consumed = 5;
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#ifdef USE_SLANG
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else if (length == 4 && seq[3] == ';')
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else if (length == 3 && seq[2] == ';')
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/* Discard broken sequences that Slang produces. */
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*consumed = 4;
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*consumed = 3;
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#endif
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#ifndef NANO_TINY
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else if (length > 4 && seq[2] == '0' && seq[4] == '~') {
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else if (length > 3 && seq[1] == '0' && seq[3] == '~') {
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/* Esc [ 2 0 0 ~ == start of a bracketed paste,
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* Esc [ 2 0 1 ~ == end of a bracketed paste. */
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*consumed = 5;
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if (seq[3] == '0') {
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*consumed = 4;
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if (seq[2] == '0') {
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bracketed_paste = TRUE;
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return BRACKETED_PASTE_MARKER;
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} else if (seq[3] == '1') {
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} else if (seq[2] == '1') {
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bracketed_paste = FALSE;
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return BRACKETED_PASTE_MARKER;
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}
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@ -632,69 +632,69 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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break;
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case '3': /* Esc [ 3 ~ == Delete on VT220/VT320/
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* Linux console/xterm/Terminal. */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_DC;
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if (length > 4 && seq[2] == ';' && seq[4] == '~') {
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*consumed = 5;
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if (length > 3 && seq[1] == ';' && seq[3] == '~') {
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*consumed = 4;
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#ifndef NANO_TINY
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if (seq[3] == '2')
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if (seq[2] == '2')
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/* Esc [ 3 ; 2 ~ == Shift-Delete on xterm/Terminal. */
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return SHIFT_DELETE;
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if (seq[3] == '3')
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if (seq[2] == '3')
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/* Esc [ 3 ; 3 ~ == Alt-Delete on xterm/rxvt/Eterm/Terminal. */
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return ALT_DELETE;
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if (seq[3] == '5')
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if (seq[2] == '5')
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/* Esc [ 3 ; 5 ~ == Ctrl-Delete on xterm. */
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return CONTROL_DELETE;
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if (seq[3] == '6')
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if (seq[2] == '6')
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/* Esc [ 3 ; 6 ~ == Ctrl-Shift-Delete on xterm. */
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return controlshiftdelete;
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#endif
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}
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#ifndef NANO_TINY
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if (length > 2 && seq[2] == '$')
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if (length > 1 && seq[1] == '$')
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/* Esc [ 3 $ == Shift-Delete on urxvt. */
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return SHIFT_DELETE;
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if (length > 2 && seq[2] == '^')
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if (length > 1 && seq[1] == '^')
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/* Esc [ 3 ^ == Ctrl-Delete on urxvt. */
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return CONTROL_DELETE;
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if (length > 2 && seq[2] == '@')
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if (length > 1 && seq[1] == '@')
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/* Esc [ 3 @ == Ctrl-Shift-Delete on urxvt. */
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return controlshiftdelete;
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if (length > 3 && seq[3] == '~')
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if (length > 2 && seq[2] == '~')
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/* Esc [ 3 n ~ == F17...F20 on some terminals. */
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*consumed = 4;
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*consumed = 3;
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#endif
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break;
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case '4': /* Esc [ 4 ~ == End on VT220/VT320/
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* Linux console/xterm. */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_END;
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break;
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case '5': /* Esc [ 5 ~ == PageUp on VT220/VT320/
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* Linux console/xterm/Eterm/urxvt/Terminal */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_PPAGE;
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else if (length > 4 && seq[2] == ';' && seq[4] == '~') {
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*consumed = 5;
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else if (length > 3 && seq[1] == ';' && seq[3] == '~') {
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*consumed = 4;
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#ifndef NANO_TINY
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if (seq[3] == '2')
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if (seq[2] == '2')
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return shiftaltup;
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if (seq[3] == '3')
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if (seq[2] == '3')
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return ALT_PAGEUP;
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#endif
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}
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break;
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case '6': /* Esc [ 6 ~ == PageDown on VT220/VT320/
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* Linux console/xterm/Eterm/urxvt/Terminal */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_NPAGE;
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else if (length > 4 && seq[2] == ';' && seq[4] == '~') {
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*consumed = 5;
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else if (length > 3 && seq[1] == ';' && seq[3] == '~') {
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*consumed = 4;
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#ifndef NANO_TINY
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if (seq[3] == '2')
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if (seq[2] == '2')
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return shiftaltdown;
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if (seq[3] == '3')
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if (seq[2] == '3')
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return ALT_PAGEDOWN;
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#endif
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}
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@ -703,14 +703,14 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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* Esc [ 7 $ == Shift-Home on Eterm/rxvt;
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* Esc [ 7 ^ == Control-Home on Eterm/rxvt;
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* Esc [ 7 @ == Shift-Control-Home on same. */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_HOME;
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else if (length > 2 && seq[2] == '$')
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else if (length > 1 && seq[1] == '$')
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return SHIFT_HOME;
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else if (length > 2 && seq[2] == '^')
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else if (length > 1 && seq[1] == '^')
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return CONTROL_HOME;
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#ifndef NANO_TINY
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else if (length > 2 && seq[2] == '@')
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else if (length > 1 && seq[1] == '@')
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return shiftcontrolhome;
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#endif
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break;
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@ -718,14 +718,14 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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* Esc [ 8 $ == Shift-End on Eterm/rxvt;
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* Esc [ 8 ^ == Control-End on Eterm/rxvt;
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* Esc [ 8 @ == Shift-Control-End on same. */
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if (length > 2 && seq[2] == '~')
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if (length > 1 && seq[1] == '~')
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return KEY_END;
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else if (length > 2 && seq[2] == '$')
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else if (length > 1 && seq[1] == '$')
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return SHIFT_END;
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else if (length > 2 && seq[2] == '^')
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else if (length > 1 && seq[1] == '^')
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return CONTROL_END;
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#ifndef NANO_TINY
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else if (length > 2 && seq[2] == '@')
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else if (length > 1 && seq[1] == '@')
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return shiftcontrolend;
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#endif
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break;
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@ -739,7 +739,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
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case 'B': /* Esc [ B == Down on the same. */
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case 'C': /* Esc [ C == Right on the same. */
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case 'D': /* Esc [ D == Left on the same. */
|
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return arrow_from_ABCD(seq[1]);
|
||||
return arrow_from_ABCD(seq[0]);
|
||||
case 'F': /* Esc [ F == End on FreeBSD console/Eterm. */
|
||||
return KEY_END;
|
||||
case 'G': /* Esc [ G == PageDown on FreeBSD console. */
|
||||
|
|
@ -756,14 +756,14 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
|
|||
case 'N': /* Esc [ N == F2 on FreeBSD console. */
|
||||
return KEY_F(2);
|
||||
case 'O':
|
||||
if (length > 2) {
|
||||
*consumed = 3;
|
||||
if ('O' < seq[2] && seq[2] < 'T')
|
||||
if (length > 1) {
|
||||
*consumed = 2;
|
||||
if ('O' < seq[1] && seq[1] < 'T')
|
||||
/* Esc [ O P == F1 on xterm. */
|
||||
/* Esc [ O Q == F2 on xterm. */
|
||||
/* Esc [ O R == F3 on xterm. */
|
||||
/* Esc [ O S == F4 on xterm. */
|
||||
return KEY_F(seq[2] - 'O');
|
||||
return KEY_F(seq[1] - 'O');
|
||||
} else
|
||||
/* Esc [ O == F3 on FreeBSD console. */
|
||||
return KEY_F(3);
|
||||
|
|
@ -773,7 +773,7 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
|
|||
case 'R': /* Esc [ R == F6 on FreeBSD console. */
|
||||
case 'S': /* Esc [ S == F7 on FreeBSD console. */
|
||||
case 'T': /* Esc [ T == F8 on FreeBSD console. */
|
||||
return KEY_F(4 + seq[1] - 'P');
|
||||
return KEY_F(4 + seq[0] - 'P');
|
||||
case 'U': /* Esc [ U == PageDown on Mach console. */
|
||||
return KEY_NPAGE;
|
||||
case 'V': /* Esc [ V == PageUp on Mach console. */
|
||||
|
|
@ -792,17 +792,17 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
|
|||
case 'c': /* Esc [ c == Shift-Right on rxvt/Eterm. */
|
||||
case 'd': /* Esc [ d == Shift-Left on rxvt/Eterm. */
|
||||
shift_held = TRUE;
|
||||
return arrow_from_ABCD(seq[1] - 0x20);
|
||||
return arrow_from_ABCD(seq[0] - 0x20);
|
||||
case '[':
|
||||
if (length > 2) {
|
||||
*consumed = 3;
|
||||
if ('@' < seq[2] && seq[2] < 'F')
|
||||
if (length > 1) {
|
||||
*consumed = 2;
|
||||
if ('@' < seq[1] && seq[1] < 'F')
|
||||
/* Esc [ [ A == F1 on Linux console. */
|
||||
/* Esc [ [ B == F2 on Linux console. */
|
||||
/* Esc [ [ C == F3 on Linux console. */
|
||||
/* Esc [ [ D == F4 on Linux console. */
|
||||
/* Esc [ [ E == F5 on Linux console. */
|
||||
return KEY_F(seq[2] - '@');
|
||||
return KEY_F(seq[1] - '@');
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
|
@ -818,15 +818,12 @@ int parse_escape_sequence(int firstbyte)
|
|||
{
|
||||
int *sequence, length, consumed, keycode;
|
||||
|
||||
/* Put the first character of the sequence back into the keybuffer. */
|
||||
put_back(firstbyte);
|
||||
|
||||
/* Grab at most six integers (the longest possible escape sequence)
|
||||
* from the keybuffer. */
|
||||
length = (key_buffer_len < 6 ? key_buffer_len : 6);
|
||||
/* Grab at most five integers (the longest possible escape sequence
|
||||
* minus its first element) from the keybuffer. */
|
||||
length = (key_buffer_len < 5 ? key_buffer_len : 5);
|
||||
sequence = get_input(NULL, length);
|
||||
|
||||
keycode = convert_sequence(sequence, length, &consumed);
|
||||
keycode = convert_sequence(firstbyte, sequence, length, &consumed);
|
||||
|
||||
/* If not all grabbed integers were consumed, put the leftovers back. */
|
||||
for (int i = length - 1; i >= consumed; i--)
|
||||
|
|
|
|||
Loading…
Reference in New Issue