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terminal: Basic vt100 escape codes

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Implements correct behaviour for vt100 cursor movement, erasing, custom
tabs, and reporting. Includes relevant terminal modes.

Signed-off-by: Callum Lowcay <callum@callumscode.com>
dev
Callum Lowcay 14 years ago committed by Kristian Høgsberg
parent bbeac60b8a
commit 8e57dd5071
1 changed files with 343 additions and 43 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 378
      clients/terminal.c

378
clients/terminal.c
Unescape View File

@ -56,6 +56,13 @@ static int option_fullscreen;
#define MAX_RESPONSE 11 #define MAX_RESPONSE 11
#define MAX_ESCAPE 64 #define MAX_ESCAPE 64
/* Terminal modes */
#define MODE_SHOW_CURSOR 0x00000001
#define MODE_INVERSE 0x00000002
#define MODE_AUTOWRAP 0x00000004
#define MODE_AUTOREPEAT 0x00000008
#define MODE_LF_NEWLINE 0x00000010
union utf8_char { union utf8_char {
unsigned char byte[4]; unsigned char byte[4];
uint32_t ch; uint32_t ch;
@ -185,13 +192,18 @@ struct terminal {
struct window *window; struct window *window;
struct display *display; struct display *display;
union utf8_char *data; union utf8_char *data;
char *tab_ruler;
struct attr *data_attr; struct attr *data_attr;
struct attr curr_attr; struct attr curr_attr;
uint32_t mode;
char origin_mode; char origin_mode;
char saved_origin_mode;
struct attr saved_attr;
union utf8_char last_char; union utf8_char last_char;
int margin_top, margin_bottom; int margin_top, margin_bottom;
int data_pitch, attr_pitch; /* The width in bytes of a line */ int data_pitch, attr_pitch; /* The width in bytes of a line */
int width, height, start, row, column; int width, height, start, row, column;
int saved_row, saved_column;
int fd, master; int fd, master;
GIOChannel *channel; GIOChannel *channel;
uint32_t modifiers; uint32_t modifiers;
@ -209,14 +221,39 @@ struct terminal {
cairo_font_face_t *font_normal, *font_bold; cairo_font_face_t *font_normal, *font_bold;
}; };
/* Create default tab stops, every 8 characters */
static void
terminal_init_tabs(struct terminal *terminal)
{
int i = 0;
while (i < terminal->width) {
if (i % 8 == 0)
terminal->tab_ruler[i] = 1;
else
terminal->tab_ruler[i] = 0;
i++;
}
}
static void static void
terminal_init(struct terminal *terminal) terminal_init(struct terminal *terminal)
{ {
terminal->curr_attr = terminal->color_scheme->default_attr; terminal->curr_attr = terminal->color_scheme->default_attr;
terminal->origin_mode = 0; terminal->origin_mode = 0;
terminal->mode = MODE_SHOW_CURSOR |
MODE_AUTOREPEAT |
MODE_AUTOWRAP;
terminal->row = 0; terminal->row = 0;
terminal->column = 0; terminal->column = 0;
terminal->saved_attr = terminal->curr_attr;
terminal->saved_origin_mode = terminal->origin_mode;
terminal->saved_row = terminal->row;
terminal->saved_column = terminal->column;
if (terminal->tab_ruler != NULL) terminal_init_tabs(terminal);
} }
static void static void
@ -362,6 +399,7 @@ terminal_resize(struct terminal *terminal, int width, int height)
size_t size; size_t size;
union utf8_char *data; union utf8_char *data;
struct attr *data_attr; struct attr *data_attr;
char *tab_ruler;
int data_pitch, attr_pitch; int data_pitch, attr_pitch;
int i, l, total_rows, start; int i, l, total_rows, start;
struct rectangle rectangle; struct rectangle rectangle;
@ -375,7 +413,9 @@ terminal_resize(struct terminal *terminal, int width, int height)
data = malloc(size); data = malloc(size);
attr_pitch = width * sizeof(struct attr); attr_pitch = width * sizeof(struct attr);
data_attr = malloc(attr_pitch * height); data_attr = malloc(attr_pitch * height);
tab_ruler = malloc(width);
memset(data, 0, size); memset(data, 0, size);
memset(tab_ruler, 0, width);
attr_init(data_attr, terminal->curr_attr, width * height); attr_init(data_attr, terminal->curr_attr, width * height);
if (terminal->data && terminal->data_attr) { if (terminal->data && terminal->data_attr) {
if (width > terminal->width) if (width > terminal->width)
@ -402,6 +442,7 @@ terminal_resize(struct terminal *terminal, int width, int height)
free(terminal->data); free(terminal->data);
free(terminal->data_attr); free(terminal->data_attr);
free(terminal->tab_ruler);
} }
terminal->data_pitch = data_pitch; terminal->data_pitch = data_pitch;
@ -412,6 +453,8 @@ terminal_resize(struct terminal *terminal, int width, int height)
terminal->margin_bottom = terminal->height - 1; terminal->margin_bottom = terminal->height - 1;
terminal->data = data; terminal->data = data;
terminal->data_attr = data_attr; terminal->data_attr = data_attr;
terminal->tab_ruler = tab_ruler;
terminal_init_tabs(terminal);
if (terminal->row >= terminal->height) if (terminal->row >= terminal->height)
terminal->row = terminal->height - 1; terminal->row = terminal->height - 1;
@ -473,7 +516,7 @@ terminal_draw_contents(struct terminal *terminal)
union utf8_char c; union utf8_char c;
char null; char null;
} toShow; } toShow;
int foreground, background, bold, underline; int foreground, background, bold, underline, tmp;
int text_x, text_y; int text_x, text_y;
cairo_surface_t *surface; cairo_surface_t *surface;
double d; double d;
@ -508,8 +551,9 @@ terminal_draw_contents(struct terminal *terminal)
/* get the attributes for this character cell */ /* get the attributes for this character cell */
attr = terminal_get_attr(terminal, row, col); attr = terminal_get_attr(terminal, row, col);
if ((attr.a & ATTRMASK_INVERSE) || if ((attr.a & ATTRMASK_INVERSE) ||
(terminal->focused && ((terminal->mode & MODE_SHOW_CURSOR) &&
terminal->row == row && terminal->column == col)) terminal->focused && terminal->row == row &&
terminal->column == col))
{ {
foreground = attr.bg; foreground = attr.bg;
background = attr.fg; background = attr.fg;
@ -517,6 +561,11 @@ terminal_draw_contents(struct terminal *terminal)
foreground = attr.fg; foreground = attr.fg;
background = attr.bg; background = attr.bg;
} }
if (terminal->mode & MODE_INVERSE) {
tmp = foreground;
foreground = background;
background = tmp;
}
bold = attr.a & (ATTRMASK_BOLD | ATTRMASK_BLINK); bold = attr.a & (ATTRMASK_BOLD | ATTRMASK_BLINK);
underline = attr.a & ATTRMASK_UNDERLINE; underline = attr.a & ATTRMASK_UNDERLINE;
@ -559,7 +608,7 @@ terminal_draw_contents(struct terminal *terminal)
} }
} }
if (!terminal->focused) { if ((terminal->mode & MODE_SHOW_CURSOR) && !terminal->focused) {
d = 0.5; d = 0.5;
cairo_set_line_width(cr, 1); cairo_set_line_width(cr, 1);
@ -626,8 +675,29 @@ handle_sgr(struct terminal *terminal, int code);
static void static void
handle_term_parameter(struct terminal *terminal, int code, int sr) handle_term_parameter(struct terminal *terminal, int code, int sr)
{ {
int i;
if (terminal->qmark_flag) { if (terminal->qmark_flag) {
switch(code) { switch(code) {
case 3: /* DECCOLM */
if (sr)
terminal_resize(terminal, 132, 24);
else
terminal_resize(terminal, 80, 24);
/* set columns, but also home cursor and clear screen */
terminal->row = 0; terminal->column = 0;
for (i = 0; i < terminal->height; i++) {
memset(terminal_get_row(terminal, i),
0, terminal->data_pitch);
attr_init(terminal_get_attr_row(terminal, i),
terminal->curr_attr, terminal->width);
}
break;
case 5: /* DECSCNM */
if (sr) terminal->mode |= MODE_INVERSE;
else terminal->mode &= ~MODE_INVERSE;
break;
case 6: /* DECOM */ case 6: /* DECOM */
terminal->origin_mode = sr; terminal->origin_mode = sr;
if (terminal->origin_mode) if (terminal->origin_mode)
@ -636,12 +706,28 @@ handle_term_parameter(struct terminal *terminal, int code, int sr)
terminal->row = 0; terminal->row = 0;
terminal->column = 0; terminal->column = 0;
break; break;
case 7: /* DECAWM */
if (sr) terminal->mode |= MODE_AUTOWRAP;
else terminal->mode &= ~MODE_AUTOWRAP;
break;
case 8: /* DECARM */
if (sr) terminal->mode |= MODE_AUTOREPEAT;
else terminal->mode &= ~MODE_AUTOREPEAT;
break;
case 25:
if (sr) terminal->mode |= MODE_SHOW_CURSOR;
else terminal->mode &= ~MODE_SHOW_CURSOR;
break;
default: default:
fprintf(stderr, "Unknown parameter: ?%d\n", code); fprintf(stderr, "Unknown parameter: ?%d\n", code);
break; break;
} }
} else { } else {
switch(code) { switch(code) {
case 20: /* LNM */
if (sr) terminal->mode |= MODE_LF_NEWLINE;
else terminal->mode &= ~MODE_LF_NEWLINE;
break;
default: default:
fprintf(stderr, "Unknown parameter: %d\n", code); fprintf(stderr, "Unknown parameter: %d\n", code);
break; break;
@ -655,8 +741,9 @@ handle_escape(struct terminal *terminal)
union utf8_char *row; union utf8_char *row;
struct attr *attr_row; struct attr *attr_row;
char *p; char *p;
int i, count, top, bottom; int i, count, x, y, top, bottom;
int args[10], set[10] = { 0, }; int args[10], set[10] = { 0, };
char response[MAX_RESPONSE] = {0, };
terminal->escape[terminal->escape_length++] = '\0'; terminal->escape[terminal->escape_length++] = '\0';
i = 0; i = 0;
@ -676,58 +763,135 @@ handle_escape(struct terminal *terminal)
} }
switch (*p) { switch (*p) {
case 'A': case 'A': /* CUU */
count = set[0] ? args[0] : 1; count = set[0] ? args[0] : 1;
if (terminal->row - count >= 0) if (count == 0) count = 1;
if (terminal->row - count >= terminal->margin_top)
terminal->row -= count; terminal->row -= count;
else else
terminal->row = 0; terminal->row = terminal->margin_top;
break; break;
case 'B': case 'B': /* CUD */
count = set[0] ? args[0] : 1; count = set[0] ? args[0] : 1;
if (terminal->row + count < terminal->height) if (count == 0) count = 1;
if (terminal->row + count <= terminal->margin_bottom)
terminal->row += count; terminal->row += count;
else else
terminal->row = terminal->height; terminal->row = terminal->margin_bottom;
break; break;
case 'C': case 'C': /* CUF */
count = set[0] ? args[0] : 1; count = set[0] ? args[0] : 1;
if (terminal->column + count < terminal->width) if (count == 0) count = 1;
if ((terminal->column + count) < terminal->width)
terminal->column += count; terminal->column += count;
else else
terminal->column = terminal->width; terminal->column = terminal->width - 1;
break; break;
case 'D': case 'D': /* CUB */
count = set[0] ? args[0] : 1; count = set[0] ? args[0] : 1;
if (terminal->column - count >= 0) if (count == 0) count = 1;
if ((terminal->column - count) >= 0)
terminal->column -= count; terminal->column -= count;
else else
terminal->column = 0; terminal->column = 0;
break; break;
case 'J': case 'E': /* CNL */
count = set[0] ? args[0] : 1;
if (terminal->row + count <= terminal->margin_bottom)
terminal->row += count;
else
terminal->row = terminal->margin_bottom;
terminal->column = 0;
break;
case 'F': /* CPL */
count = set[0] ? args[0] : 1;
if (terminal->row - count >= terminal->margin_top)
terminal->row -= count;
else
terminal->row = terminal->margin_top;
terminal->column = 0;
break;
case 'G': /* CHA */
y = set[0] ? args[0] : 1;
y = y <= 0 ? 1 : y > terminal->width ? terminal->width : y;
terminal->column = y - 1;
break;
case 'f': /* HVP */
case 'H': /* CUP */
x = (set[1] ? args[1] : 1) - 1;
x = x < 0 ? 0 :
(x >= terminal->width ? terminal->width - 1 : x);
y = (set[0] ? args[0] : 1) - 1;
if (terminal->origin_mode) {
y += terminal->margin_top;
y = y < terminal->margin_top ? terminal->margin_top :
(y > terminal->margin_bottom ? terminal->margin_bottom : y);
} else {
y = y < 0 ? 0 :
(y >= terminal->height ? terminal->height - 1 : y);
}
terminal->row = y;
terminal->column = x;
break;
case 'I': /* CHT */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
while (count > 0 && terminal->column < terminal->width) {
if (terminal->tab_ruler[terminal->column]) count--;
terminal->column++;
}
terminal->column--;
break;
case 'J': /* ED */
row = terminal_get_row(terminal, terminal->row); row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row); attr_row = terminal_get_attr_row(terminal, terminal->row);
memset(&row[terminal->column], 0, (terminal->width - terminal->column) * sizeof(union utf8_char)); if (!set[0] || args[0] == 0 || args[0] > 2) {
attr_init(&attr_row[terminal->column], terminal->curr_attr, (terminal->width - terminal->column)); memset(&row[terminal->column],
0, (terminal->width - terminal->column) * sizeof(union utf8_char));
attr_init(&attr_row[terminal->column],
terminal->curr_attr, terminal->width - terminal->column);
for (i = terminal->row + 1; i < terminal->height; i++) { for (i = terminal->row + 1; i < terminal->height; i++) {
memset(terminal_get_row(terminal, i), 0, terminal->width * sizeof(union utf8_char)); memset(terminal_get_row(terminal, i),
attr_init(terminal_get_attr_row(terminal, i), terminal->curr_attr, terminal->width); 0, terminal->data_pitch);
attr_init(terminal_get_attr_row(terminal, i),
terminal->curr_attr, terminal->width);
}
} else if (args[0] == 1) {
memset(row, 0, (terminal->column+1) * sizeof(union utf8_char));
attr_init(attr_row, terminal->curr_attr, terminal->column+1);
for (i = 0; i < terminal->row; i++) {
memset(terminal_get_row(terminal, i),
0, terminal->data_pitch);
attr_init(terminal_get_attr_row(terminal, i),
terminal->curr_attr, terminal->width);
}
} else if (args[0] == 2) {
for (i = 0; i < terminal->height; i++) {
memset(terminal_get_row(terminal, i),
0, terminal->data_pitch);
attr_init(terminal_get_attr_row(terminal, i),
terminal->curr_attr, terminal->width);
}
} }
break; break;
case 'G': case 'K': /* EL */
if (set[0])
terminal->column = args[0] - 1;
break;
case 'H':
case 'f':
terminal->row = set[0] ? args[0] - 1 : 0;
terminal->column = set[1] ? args[1] - 1 : 0;
break;
case 'K':
row = terminal_get_row(terminal, terminal->row); row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row); attr_row = terminal_get_attr_row(terminal, terminal->row);
memset(&row[terminal->column], 0, (terminal->width - terminal->column) * sizeof(union utf8_char)); if (!set[0] || args[0] == 0 || args[0] > 2) {
attr_init(&attr_row[terminal->column], terminal->curr_attr, (terminal->width - terminal->column)); memset(&row[terminal->column], 0,
(terminal->width - terminal->column) * sizeof(union utf8_char));
attr_init(&attr_row[terminal->column], terminal->curr_attr,
terminal->width - terminal->column);
} else if (args[0] == 1) {
memset(row, 0, (terminal->column+1) * sizeof(union utf8_char));
attr_init(attr_row, terminal->curr_attr, terminal->column+1);
} else if (args[0] == 2) {
memset(row, 0, terminal->data_pitch);
attr_init(attr_row, terminal->curr_attr, terminal->width);
}
break; break;
case 'S': /* SU */ case 'S': /* SU */
terminal_scroll(terminal, set[0] ? args[0] : 1); terminal_scroll(terminal, set[0] ? args[0] : 1);
@ -735,6 +899,46 @@ handle_escape(struct terminal *terminal)
case 'T': /* SD */ case 'T': /* SD */
terminal_scroll(terminal, 0 - (set[0] ? args[0] : 1)); terminal_scroll(terminal, 0 - (set[0] ? args[0] : 1));
break; break;
case 'Z': /* CBT */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
while (count > 0 && terminal->column >= 0) {
if (terminal->tab_ruler[terminal->column]) count--;
terminal->column--;
}
terminal->column++;
break;
case '`': /* HPA */
y = set[0] ? args[0] : 1;
y = y <= 0 ? 1 : y > terminal->width ? terminal->width : y;
terminal->column = y - 1;
break;
case 'b': /* REP */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
if (terminal->last_char.byte[0])
for (i = 0; i < count; i++)
handle_char(terminal, terminal->last_char);
terminal->last_char.byte[0] = 0;
break;
case 'c': /* Primary DA */
write(terminal->master, "\e[?1;2c", 7);
sleep(1);
break;
case 'd': /* VPA */
x = set[0] ? args[0] : 1;
x = x <= 0 ? 1 : x > terminal->height ? terminal->height : x;
terminal->row = x - 1;
break;
case 'g': /* TBC */
if (!set[0] || args[0] == 0) {
terminal->tab_ruler[terminal->column] = 0;
} else if (args[0] == 3) {
memset(terminal->tab_ruler, 0, terminal->width);
}
break;
case 'h': /* SM */ case 'h': /* SM */
for(i = 0; i < 10 && set[i]; i++) { for(i = 0; i < 10 && set[i]; i++) {
handle_term_parameter(terminal, args[i], 1); handle_term_parameter(terminal, args[i], 1);
@ -766,6 +970,19 @@ handle_escape(struct terminal *terminal)
} }
} }
break; break;
case 'n': /* DSR */
i = set[0] ? args[0] : 0;
if (i == 0 || i == 5) {
write(terminal->master, "\e[0n", 4);
} else if (i == 6) {
snprintf(response, MAX_RESPONSE, "\e[%d;%dR",
terminal->origin_mode ?
terminal->row+terminal->margin_top : terminal->row+1,
terminal->column+1);
write(terminal->master, response, strlen(response));
}
sleep(1); /* is this required? why? */
break;
case 'r': case 'r':
if(!set[0]) { if(!set[0]) {
terminal->margin_top = 0; terminal->margin_top = 0;
@ -793,6 +1010,14 @@ handle_escape(struct terminal *terminal)
terminal->column = 0; terminal->column = 0;
} }
break; break;
case 's':
terminal->saved_row = terminal->row;
terminal->saved_column = terminal->column;
break;
case 'u':
terminal->row = terminal->saved_row;
terminal->column = terminal->saved_column;
break;
default: default:
fprintf(stderr, "Unknown CSI escape: %c\n", *p); fprintf(stderr, "Unknown CSI escape: %c\n", *p);
break; break;
@ -820,6 +1045,24 @@ handle_non_csi_escape(struct terminal *terminal, char code)
terminal_scroll(terminal, +1); terminal_scroll(terminal, +1);
} }
break; break;
case 'c': /* RIS */
terminal_init(terminal);
break;
case 'H': /* HTS */
terminal->tab_ruler[terminal->column] = 1;
break;
case '7': /* DECSC */
terminal->saved_row = terminal->row;
terminal->saved_column = terminal->column;
terminal->saved_attr = terminal->curr_attr;
terminal->saved_origin_mode = terminal->origin_mode;
break;
case '8': /* DECRC */
terminal->row = terminal->saved_row;
terminal->column = terminal->saved_column;
terminal->curr_attr = terminal->saved_attr;
terminal->origin_mode = terminal->saved_origin_mode;
break;
default: default:
fprintf(stderr, "Unknown escape code: %c\n", code); fprintf(stderr, "Unknown escape code: %c\n", code);
break; break;
@ -829,6 +1072,25 @@ handle_non_csi_escape(struct terminal *terminal, char code)
static void static void
handle_special_escape(struct terminal *terminal, char special, char code) handle_special_escape(struct terminal *terminal, char special, char code)
{ {
int i, numChars;
if (special == '#') {
switch(code) {
case '8':
/* fill with 'E', no cheap way to do this */
memset(terminal->data, 0, terminal->data_pitch * terminal->height);
numChars = terminal->width * terminal->height;
for(i = 0; i < numChars; i++) {
terminal->data[i].byte[0] = 'E';
}
break;
default:
fprintf(stderr, "Unknown HASH escape #%c\n", code);
break;
}
} else {
fprintf(stderr, "Unknown special escape %c%c\n", special, code);
}
} }
static void static void
@ -908,7 +1170,9 @@ handle_special_char(struct terminal *terminal, char c)
terminal->column = 0; terminal->column = 0;
break; break;
case '\n': case '\n':
if (terminal->mode & MODE_LF_NEWLINE) {
terminal->column = 0; terminal->column = 0;
}
/* fallthrough */ /* fallthrough */
case '\v': case '\v':
case '\f': case '\f':
@ -920,13 +1184,32 @@ handle_special_char(struct terminal *terminal, char c)
break; break;
case '\t': case '\t':
memset(&row[terminal->column], ' ', (-terminal->column & 7) * sizeof(union utf8_char)); while (terminal->column < terminal->width) {
attr_init(&attr_row[terminal->column], terminal->curr_attr, -terminal->column & 7); if (terminal->tab_ruler[terminal->column]) break;
terminal->column = (terminal->column + 7) & ~7; row[terminal->column].byte[0] = ' ';
row[terminal->column].byte[1] = '\0';
attr_row[terminal->column] = terminal->curr_attr;
terminal->column++;
}
if (terminal->column >= terminal->width) {
terminal->column = terminal->width - 1;
}
break; break;
case '\b': case '\b':
if (terminal->column > 0) if (terminal->column >= terminal->width) {
terminal->column = terminal->width - 2;
} else if (terminal->column > 0) {
terminal->column--; terminal->column--;
} else if (terminal->mode & MODE_AUTOWRAP) {
terminal->column = terminal->width - 1;
terminal->row -= 1;
if (terminal->row < terminal->margin_top) {
terminal->row = terminal->margin_top;
terminal_scroll(terminal, -1);
}
}
break; break;
case '\a': case '\a':
/* Bell */ /* Bell */
@ -961,8 +1244,17 @@ handle_char(struct terminal *terminal, union utf8_char utf8)
/* handle right margin effects */ /* handle right margin effects */
if (terminal->column >= terminal->width) { if (terminal->column >= terminal->width) {
if (terminal->mode & MODE_AUTOWRAP) {
terminal->column = 0;
terminal->row += 1;
if (terminal->row > terminal->margin_bottom) {
terminal->row = terminal->margin_bottom;
terminal_scroll(terminal, +1);
}
} else {
terminal->column--; terminal->column--;
} }
}
row = terminal_get_row(terminal, terminal->row); row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row); attr_row = terminal_get_attr_row(terminal, terminal->row);
@ -1067,7 +1359,7 @@ key_handler(struct window *window, uint32_t key, uint32_t sym,
uint32_t state, uint32_t modifiers, void *data) uint32_t state, uint32_t modifiers, void *data)
{ {
struct terminal *terminal = data; struct terminal *terminal = data;
char ch[2]; char ch[MAX_RESPONSE];
int len = 0; int len = 0;
switch (sym) { switch (sym) {
@ -1085,7 +1377,6 @@ key_handler(struct window *window, uint32_t key, uint32_t sym,
case XK_Tab: case XK_Tab:
case XK_Linefeed: case XK_Linefeed:
case XK_Clear: case XK_Clear:
case XK_Return:
case XK_Pause: case XK_Pause:
case XK_Scroll_Lock: case XK_Scroll_Lock:
case XK_Sys_Req: case XK_Sys_Req:
@ -1093,6 +1384,15 @@ key_handler(struct window *window, uint32_t key, uint32_t sym,
ch[len++] = sym & 0x7f; ch[len++] = sym & 0x7f;
break; break;
case XK_Return:
if (terminal->mode & MODE_LF_NEWLINE) {
ch[len++] = 0x0D;
ch[len++] = 0x0A;
} else {
ch[len++] = 0x0D;
}
break;
case XK_Shift_L: case XK_Shift_L:
case XK_Shift_R: case XK_Shift_R:
case XK_Control_L: case XK_Control_L:

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