E163 when restoring a session set up with --remote-silent-tab

Hello,

I have a similar problem (if not the same) as in "session problem"
topic from March 7. When a few files are open in tabs LOCALLY, a
session is saved and later restored, everything is ok. But if the
command to open one of the files comes from outside (--remote-silent-
tab) one gets error "E163: There is only one file to edit" when trying
to restore the session. Here is how to reproduce the problem:

$ echo a > a.txt
$ echo b > b.txt
$ gvim --noplugin -u NONE -U NONE
:e a.txt
$ gvim --noplugin -u NONE -U NONE --remote-silent-tab b.txt
:mksession!
:qa
$ gvim --noplugin -u NONE -U NONE -S
:messages
" E163 There is only one file to edit

One can avoid controlling vim from outside and create a session file
issuing local commands only:

$ gvim --noplugin -u NONE -U NONE
:e a.txt
:tab new
:e b.txt
:mksession!
:qa
$ gvim --noplugin -u NONE -U NONE -S
" everything ok - good session file

The bad session file sets up an arg list with one arg only, but later
tries to edit a file on the second place in args (2argu) and that's
the line where the error message comes. The good session doesn't use
arglist at all (wipes it even with argdel *). I didn't find any help
file mentioning that an argument list is set when vim is issued a
command via --remote-silent-tab. My vim is 7.2.49. Does anybody have
an idea how to fix the session creation?

Thanks,
Tom

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