When clicking on a string displayed by a display property, also
look at the text properties of the underlying buffer text for
keymaps, not just the displayed string. The displayed string
takes precedence over the buffer text, but it doesn't replace
it.
Also, we should use the buffer's local map even for clicks on
the mode line. (Otherwise, what's the point of the <mode-line>
event?)
* src/keymap.c (Fcurrent_active_maps): Consider displayed
string, then buffer text, then fall back to local
map. (Bug#79505)
* test/src/keymap-tests.el
(keymap-test-keymaps-for-non-buffer-positions): Add more tests.
bea16dfe69