- /* The (origin-1) column just after the boundary. This is neither a
- byte count, nor a character count; it is a column count.
- If this is INT_MAX, the column number has overflowed. */
+ /* If nonnegative, the (origin-1) column just after the boundary.
+ This is neither a byte count, nor a character count; it is a
+ column count. If this is INT_MAX, the column number has
+ overflowed.
+
+ Meaningless and not displayed if negative.
+ */