(defvar dabbrev-select-buffers-function 'dabbrev--select-buffers
"A function that selects buffers that should be searched by dabbrev.
The function should take no arguments and return a list of buffers to
-search for expansions. Have a look at `dabbrev--select-buffers' for
-an example.
+search for expansions. See the source of `dabbrev--select-buffers'
+for an example.
A mode setting this variable should make it buffer local.")