+
+int
+mandoc_eos(const char *p, size_t sz)
+{
+
+ if (0 == sz)
+ return(0);
+
+ /*
+ * End-of-sentence recognition must include situations where
+ * some symbols, such as `)', allow prior EOS punctuation to
+ * propogate outward.
+ */
+
+ for ( ; sz; sz--) {
+ switch (p[(int)sz - 1]) {
+ case ('\"'):
+ /* FALLTHROUGH */
+ case ('\''):
+ /* FALLTHROUGH */
+ case (']'):
+ /* FALLTHROUGH */
+ case (')'):
+ break;
+ case ('.'):
+ /* Escaped periods. */
+ if (sz > 1 && '\\' == p[(int)sz - 2])
+ return(0);
+ /* FALLTHROUGH */
+ case ('!'):
+ /* FALLTHROUGH */
+ case ('?'):
+ return(1);
+ default:
+ return(0);
+ }
+ }
+
+ return(0);
+}