{

const char *line = mirb_buffer_current_line(buf);

size_t col = buf->cursor_col;

size_t line_len = buf->lines[buf->cursor_line].len;

/* Check for '}' - dedent immediately when typed at line start */

if (last_char == '}') {

}

}

/* Check for 'end' - dedent when 'd' completes "end" */

if (last_char == 'd' && col >= 3) {

/* Check if we just completed "end" */

if (line[col - 3] == 'e' && line[col - 2] == 'n' && line[col - 1] == 'd') {

/* Verify only whitespace before "end" */

if (col == 3 || line_is_blank_before(line, col - 3)) {

/* Verify "end" is not part of a longer word */

if (col == buf->lines[buf->cursor_line].len ||

line[col] == ' ' || line[col] == '\t' || line[col] == '\0' ||

line[col] == '\n' || line[col] == '.' || line[col] == ')') {

return TRUE;

}

}

/* Helper macro: check keyword completion */

#define CHECK_KEYWORD(keyword, len, trigger_char) \

if (last_char == trigger_char && col >= len) { \

if (strncmp(line + col - len, keyword, len) == 0) { \

if (col == len || line_is_blank_before(line, col - len)) { \

if (col == line_len || \

line[col] == ' ' || line[col] == '\t' || line[col] == '\0' || \

line[col] == '\n' || line[col] == '.' || line[col] == ')') { \

return TRUE; \

} \

} \

} \

}

}

/* Check for 'end' - dedent when 'd' completes "end" */

CHECK_KEYWORD("end", 3, 'd');

/* Check for 'else' - dedent when 'e' completes "else" */

CHECK_KEYWORD("else", 4, 'e');

/* Check for 'elsif' - dedent when 'f' completes "elsif" */

CHECK_KEYWORD("elsif", 5, 'f');

/* Check for 'when' - dedent when 'n' completes "when" */

CHECK_KEYWORD("when", 4, 'n');

/* Check for 'rescue' - dedent when 'e' completes "rescue" */

CHECK_KEYWORD("rescue", 6, 'e');

/* Check for 'ensure' - dedent when 'e' completes "ensure" */

CHECK_KEYWORD("ensure", 6, 'e');

#undef CHECK_KEYWORD

return FALSE;

}