24  * Returns spaces from start of line, if set, or 0 if unset:
236  * bch2_printbuf_tabstop_set() - add a tabstop, n spaces from the previous tabstop
239  * @spaces: number of spaces from previous tabpstop
242  * PRINTBUF_INLINE_TABSTOPS or setting tabstops more than 255 spaces from start
245 int bch2_printbuf_tabstop_push(struct printbuf *buf, unsigned spaces)  in bch2_printbuf_tabstop_push()  argument
254 	buf->_tabstops[buf->nr_tabstops++] = prev_tabstop + spaces;  in bch2_printbuf_tabstop_push()
263  * @spaces: number of spaces to add to the current indent level
266  * of the current line, will be indented by @spaces more spaces.
268 void bch2_printbuf_indent_add(struct printbuf *buf, unsigned spaces)  in bch2_printbuf_indent_add()  argument
270 	if (WARN_ON_ONCE(buf->indent + spaces < buf->indent))  in bch2_printbuf_indent_add()
271 		spaces = 0;  in bch2_printbuf_indent_add()
273 	buf->indent += spaces;  in bch2_printbuf_indent_add()
274 	prt_chars(buf, ' ', spaces);  in bch2_printbuf_indent_add()
283  * @spaces: number of spaces to subtract from the current indent level
286  * of the current line, will be indented by @spaces less spaces.
288 void bch2_printbuf_indent_sub(struct printbuf *buf, unsigned spaces)  in bch2_printbuf_indent_sub()  argument
290 	if (WARN_ON_ONCE(spaces > buf->indent))  in bch2_printbuf_indent_sub()
291 		spaces = buf->indent;  in bch2_printbuf_indent_sub()
294 		buf->pos -= spaces;  in bch2_printbuf_indent_sub()
297 	buf->indent -= spaces;  in bch2_printbuf_indent_sub()
335 	int spaces = max_t(int, 0, cur_tabstop(out) - printbuf_linelen(out));  in __prt_tab()  local
337 	prt_chars(out, ' ', spaces);  in __prt_tab()
347  * Advance output to the next tabstop by printing spaces.
373  * Advance output to the next tabstop by inserting spaces immediately after the