On Thu, Dec 02, 2010 at 11:23:37AM +0800, Grissiom wrote: > A double check here is reasonable because if we launch a X-based browser in > non-X environment, everything will fail, users will got confused. > > But On my box(Slackware), there is no $XAUTHORITY at all... But I see a > XDG_SESSION_COOKIE which might be present in every X session. I'm not > familiar in this area so it's just my guessing.
i don't think the lack of any of those variables is an indicator for a non-X environment. only DISPLAY should reliably be present if X is available, but, even that is not proof enough that X is really accessible. in screen for example i get my DISPLAY value frequently wrong (because it is from a previous login) so the only real test is to actually make a connection to the X server and see if it responds. however, even then, using a gui browser only works if it is started from the local machine. imagine the following scenario: i log into a remote server, and have DISPLAY pointing back to my desktop. on the desktop i run firefox. now on the server i invoke help. it starts firefox, which connects to the X server and finds that there is a firefox already running, so instead it will tell the desktop firefox to open a new window. and now the catch: on my desktop i don't have fish (for whatever reason, it could also be that the help pages are in a different path) and firefox fails to open the page. fish help will never find out that opening the page failed. so another check is needed, to open a gui browser only if the DISPLAY is local. (this also helps speed up, i really would not want to wait for a remote browser to come up on my desktop over a slow connection) greetings, martin. -- cooperative communication with sTeam - caudium, pike, roxen and unix services: debugging, programming, training, linux sysadmin, web development -- pike programmer working in china community.gotpike.org foresight developer (open-steam|caudium).org foresightlinux.org unix sysadmin iaeste.at realss.com Martin Bähr http://www.iaeste.at/~mbaehr/ is.schon.org ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Fish-users mailing list Fish-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fish-users
