** entry when expanding the alias. By default the regular expression is set
** to ``\fT^[^,]*\fP'' which will return the string up to the first ``\fT,\fP'' encountered.
** If the GECOS field contains a string like "lastname, firstname" then you
** should do: \fTset gecos_mask=".*"\fP.
** .pp
** This can be useful if you see the following behavior: you address a e-mail
** entry when expanding the alias. By default the regular expression is set
** to ``\fT^[^,]*\fP'' which will return the string up to the first ``\fT,\fP'' encountered.
** If the GECOS field contains a string like "lastname, firstname" then you
** should do: \fTset gecos_mask=".*"\fP.
** .pp
** This can be useful if you see the following behavior: you address a e-mail