parenthesis depth) of the returned state are not meaningful.
@end defun
+@defun syntax-ppss-flush-cache beg
+This function flushes the cache used by @code{syntax-ppss}, starting at
+position @var{beg}.
+
+When @code{syntax-ppss} is called, it automatically hooks itself
+to @code{before-change-functions} to keep its cache consistent.
+But this can fail if @code{syntax-ppss} is called while
+@code{before-change-functions} is temporarily let-bound, or if the
+buffer is modified without obeying the hook, such as when using
+@code{inhibit-modification-hooks}. For this reason, it is sometimes
+necessary to flush the cache manually.
+@end defun
+
+@defvar syntax-begin-function
+If this is non-@code{nil}, it should be a function that moves to an
+earlier buffer position where the parser state is equivalent to
+@code{nil}---in other words, a position outside of any comment,
+string, or parenthesis. @code{syntax-ppss} uses it to supplement its
+cache.
+@end defvar
+
@defun scan-lists from count depth
This function scans forward @var{count} balanced parenthetical groupings
from position @var{from}. It returns the position where the scan stops.
This table gives the value of @var{syntax-code} which corresponds
to each syntactic type.
-@multitable @columnfractions .05 .3 .3 .3
+@multitable @columnfractions .05 .3 .3 .31
@item
@tab
@i{Integer} @i{Class}