Ernie Rael wrote:
> I want to determine what text property, if any, is under the mouse
> position. The best options seems to be
>
> prop_find({lnum: mpos.line, col: mpos.column, ...})
>
> and then check if the returned property covers the mouse position.
>
> I am wondering about having an "exact: true" option in prop_find's
> "search for" options. When "exact: true" a property is only returned
> if (lnum, col) are covered by the property, otherwise an empty
> dictionary is returned.
>
> Using this would minimize extra code, including vim9 code to check
> if returned property covers mouse pos. This is used on every mouse
> movement event, would be nice to minimize overhead.
>
> Would a patch that adds "exact: true" be considered? I haven't looked
> at the code yet; first looking for comments on this approach.
prop_find() can be inefficient, since it searches the whole buffer.
That is especially when no match is found.
How about using prop_list() instead? It only checks for properties in
one line, which is what you want. We could add a "col" entry in the
{props} argument to narrow down to properties that include this column.
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