test-matlab-ts-mode--ei-workaround-143-action-fun result:
---
% -*- matlab-ts -*-

a =  123./   456 ./ 1;

% BEG-point

% Buffer-point-next-line-column: 12 (on the 4)
b = 123 .*   <!PT!>456 .* 2;

% END-point

c =  123.\  123 .\  3;
