use b_plain
use cz/vars

rm_comments_blank()
	for_vec(i, lines, cstr)
		cstr l = *i
		if strchr(l, '#')
			char *p = l
			while *p
				char *p0 = p
				if token(&p) == COMMENT   # TODO more efficient, don't scan whole comment?
					while p0 > l && isspace(p0[-1])
						--p0
					*p0 = '\0'
					break

		int blank = is_blank(l)
		if !blank
			# remove colons and add func parens
			int len = strlen(l)
			if len > 2 && l[len-1] == ':' && l[len-2] != ' ':
				l[len-1] = '\0'
				if !strpbrk(l, "\t ()"):
					l = tofree(cstr_cat(l, "()"))  # TODO alloc a little extra space for each line instead?
			# cope with vim adding unwanted spaces in indent
			char *from = strstr(l, " \t")
			if from
				char *to = from
				++from
				while to > l && to[-1] == ' '
					--to
				cstr_chop_start(to, from)
			vec_push(work, l)

	swap(lines, work)
	vecclr(work)