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Do our best to restore tab characters #722

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Do our best to restore tab characters #722

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12 changes: 12 additions & 0 deletions vterm-module.c
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Original file line number Diff line number Diff line change
Expand Up @@ -316,6 +316,7 @@ static void refresh_lines(Term *term, emacs_env *env, int start_row,

for (i = start_row; i < end_row; i++) {

int consecutive_empty_cells = 0;
int newline = 0;
int isprompt = 0;
for (j = 0; j < end_col; j++) {
Expand All @@ -340,14 +341,25 @@ static void refresh_lines(Term *term, emacs_env *env, int start_row,

lastCell = cell;
if (cell.chars[0] == 0) {
++consecutive_empty_cells;

if (is_eol(term, end_col, i, j)) {
/* This cell is EOL if this and every cell to the right is black */
PUSH_BUFFER('\n');
newline = 1;
break;
}

PUSH_BUFFER(' ');

if ((j + 1) % 8 == 0 && length >= consecutive_empty_cells) {
length -= consecutive_empty_cells;
PUSH_BUFFER('\t');
consecutive_empty_cells = 0;
}
} else {
consecutive_empty_cells = 0;

for (int k = 0; k < VTERM_MAX_CHARS_PER_CELL && cell.chars[k]; ++k) {
unsigned char bytes[4];
size_t count = codepoint_to_utf8(cell.chars[k], bytes);
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1 change: 1 addition & 0 deletions vterm.el
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Expand Up @@ -765,6 +765,7 @@ Exceptions are defined by `vterm-keymap-exceptions'."
(setq-local scroll-margin 0)
(setq-local hscroll-margin 0)
(setq-local hscroll-step 1)
(setq-local tab-width 8)
(setq-local truncate-lines t)


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