What do those codes mean in the unselected tab (e.g. \S\r\b\m\filename.txt) and it is possible to hide them, make the tab titles a uniform size and ellipsized? For instance, the tabs in a browser?
What do those codes mean in the unselected tab (e.g. \S\r\b\m\filename.txt) and it is
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AFAIK, this is how vim abbreviates filesystem paths.
/home/me/devel/secretproject/src/foo.cgets abbreviated to/h/m/d/s/s/foo.c, giving you slightly more clue as to where the file is than an ellipsis would (assuming you somewhat know the structure of the underlying filesystem).