What does Backslash "\" mean?

[monk]

In lisp what is the significance of backslash? For example for me to load a command from a DCL button I would write:

 

(action_tile "MKLINE" "(command \"line\")(done_dialog)")

 

I have had a look around and most people say that the character after the backslash is not taken into account?! I am a little foggy.

 

Thanks

Edited July 10, 2012 by monk

[MSasu]

Is used in pair with following character to add special characters to strings. The ACTION_TILE function accept a string argument - therefore "\"" allow you to incluse the " character in string. Other examples: "\t" (tab), "\n" (new line) or "\\" (backslash).

[monk]

Ah i understand!

 

But why for example does this not work?

 

(action_tile "MKLINE" "(command line)(done_dialog)")

Edited July 10, 2012 by monk

[MSasu]

There are two errors on that excerpt (by the way, please edit your posts to add code tags).

1. The call of command is not allowed while the dialog is still open.
   
2. The name of command must be provided as a string.
   

[s](command line)[/s]
(command "line")

[Lee Mac]

I've attempted to explain the use of the backslash many times...

 

http://www.cadtutor.net/forum/showthread.php?66989-Highligting-a-selection&p=459873&viewfull=1#post459873

http://www.cadtutor.net/forum/showthread.php?60935-Help-troubleshooting-LISP-to-insert-titleblock&p=413743&viewfull=1#post413743

http://www.cadtutor.net/forum/showthread.php?59341-Custom-Block-Inserts&p=402387&viewfull=1#post402387

http://www.theswamp.org/index.php?topic=41033.msg462429#msg462429

http://www.theswamp.org/index.php?topic=40111.msg453823#msg453823

http://forums.augi.com/showthread.php?131845-importing-layer-states-via-quot-layerstate-import-quot-function&p=1136714&viewfull=1#post1136714