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(update_syntax_table): Properly update `position' field of used intervals.

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Richard M. Stallman
1998-03-02 02:40:53 +00:00
parent 2509b14d79
commit d80f4cc71c
1 changed files with 15 additions and 0 deletions
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15
src/syntax.c
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@@ -130,6 +130,21 @@ update_syntax_table (charpos, count, init, object)
invalidate = 0;
if (NULL_INTERVAL_P (i))
return;
/* interval_of () updates only ->position of the return value,
update the parents manually to speed up update_interval. */
while (!NULL_PARENT (i))
{
if (AM_RIGHT_CHILD (i))
i->parent->position = i->position
- LEFT_TOTAL_LENGTH (i) + TOTAL_LENGTH (i) /* right end */
- TOTAL_LENGTH (i->parent)
+ LEFT_TOTAL_LENGTH (i->parent);
else
i->parent->position = i->position - LEFT_TOTAL_LENGTH (i)
+ TOTAL_LENGTH (i);
i = i->parent;
}
i = gl_state.forward_i;
gl_state.b_property = i->position - 1 - gl_state.offset;
gl_state.e_property = INTERVAL_LAST_POS (i) - gl_state.offset;
goto update;