prompt_space
while (first > pr->buffer && !prompt_space(first))
while (first->size != 0 && prompt_space(first))
while (last->size != 0 && !prompt_space(last))
while (last > pr->buffer && prompt_space(last))
while (idx != size && prompt_space(&pr->buffer[idx]))
!prompt_space(&pr->buffer[idx]);
if (prompt_space(&pr->buffer[idx])) {
prompt_space(&pr->buffer[idx]))
} while (prompt_space(&pr->buffer[idx]));
} while (!prompt_space(&pr->buffer[idx]) &&
if (!prompt_space(&pr->buffer[idx]))
if (prompt_space(&pr->buffer[idx]) ||
if (!prompt_space(&pr->buffer[idx]))
if (prompt_space(&pr->buffer[idx]) ||