Hi all,

while working on a custom pretty printer, I was having the need to keep some
state variables for the duration of one buffer, and reset them again for the
next buffer. With the current hooks a pretty printer has available, this is
not possible, since you never know what the first and last lines are.

The attached patch adds two new hooks, begin_of_buffer and end_of_buffer,
which will be called when typing a buffer or a file (e.g. \typebuffer or
\typefile). They are not called for typing a phrase (e.g. \type).

Is this patch acceptable for inclusion?



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