backslash
backslash(p, c);
static void backslash(struct parse *, int);
s->equiv[0] = backslash(s);
stopval = *++s->str == '\\' ? backslash(s) : *s->str++;
s->lastch = backslash(s);
s->cnt = backslash(s);
static int backslash(STR *);
s->lastch = backslash(s);
uint64_t backslash;
block->backslash = simd_find_8x64(&block->input, '\\');
block->backslash, &parser->file->state.is_escaped);
uint64_t backslash, uint64_t *is_escaped)
backslash &= ~ *is_escaped;
uint64_t follows_escape = backslash << 1 | *is_escaped;
uint64_t odd_sequence_starts = backslash & ~even_bits & ~follows_escape;
*is_escaped = add_overflow(odd_sequence_starts, backslash, &sequences_starting_on_even_bits);