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alluran
Adept
Joined: 14 Sep 2005
Posts: 223
Location: Sydney, Australia
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 Posted: Sun Jan 20, 2008 1:36 pm
Command Line Variables And Spaces
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the mud i play uses @ for color codes, but every time i enter something like:
| Code: |
| gt @RRedText @BBlueText |
it gets interpreted as:
| Code: |
| gt @RRedText@BBlueText |
i could understand it being interpretted as just gt (evaluating empty variables, not that i would like it that way) etc, but the missing trailing spaces seem to be a bug to me[/code] |
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Larkin
Wizard
Joined: 25 Mar 2003
Posts: 1113
Location: USA
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Posted: Sun Jan 20, 2008 2:07 pm
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Is gt an alias? Or is this the command line doing it for certain?
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alluran
Adept
Joined: 14 Sep 2005
Posts: 223
Location: Sydney, Australia
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Posted: Sun Jan 20, 2008 2:09 pm
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gt isn't an alias, it's just the command line itself, i use gt because it's a private invite only channel with a history function ;) works on echos, etc aswell, i actually am going off the text sent to the mud though, not the text the mud sends back, never gagged my commands :)
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charneus
Wizard
Joined: 19 Jun 2005
Posts: 1876
Location: California
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Posted: Sun Jan 20, 2008 6:16 pm
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Right. I play the same MUD, and presently, the only way to get around that is to put quotes around the whole thing. And it is coming from the command line itself. I type
| Code: |
| gt @RRedtext @BBluetest |
And it produces the same results Alluran got, which is:
| Code: |
| (Group) Charneus: 'RedtextBluetext' |
However, using the following:
| Code: |
| gt @RRed text @BBlue text |
produces it correctly:
| Code: |
| (Group) Charneus: 'Red text Blue text' |
Furthermore, going back to the first one, if I type:
| Code: |
| gt "@RRedtext @BBluetext" |
it produces:
| Code: |
| (Group) Charneus: '"Redtext Bluetext"' |
Very weird "bug" indeed.
Charneus |
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Tech
GURU
Joined: 18 Oct 2000
Posts: 2733
Location: Atlanta, USA
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Posted: Sun Jan 20, 2008 6:40 pm
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CMUD uses the '@' to refer to variables. You can either quote the '@' symbol, change the symbol in CMUD preferences, or turn off the smart command line.
This
gt ~@RRedText ~@BBlueText
or this should work.
"gt @RRedText @BBlueText"
or
#SENDRAW gt @RRedText @BBlueText |
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Asati di tempari! |
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charneus
Wizard
Joined: 19 Jun 2005
Posts: 1876
Location: California
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Posted: Sun Jan 20, 2008 7:57 pm
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While that may be true, Tech (and yes, your examples do work), the colors are coming out just fine. So CMUD is reading it (and sending it raw). The problem is this:
gt @RRedtext @BBluetext
sends:
(Group) Charneus: RedtextBluetext
whereas
gt @RRed text @BBlue text
sends:
(Group) Charneus: Red text Blue text
If it was a problem, then the text and the Blue would show up as textBlue.
Not to mention that it starts to be a hassle when we want to send color codes to the MUD and we're stuck with having to escape every single one of them. Or putting quotes around the entire thing. *sigh* But we don't even have to - it works in most cases. Just when it's like the above examples, it doesn't work. If CMUD was really parsing it as a variable, then we wouldn't get the color. We wouldn't even get anything - it'd be blank. *shrug*
Charneus |
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alluran
Adept
Joined: 14 Sep 2005
Posts: 223
Location: Sydney, Australia
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Posted: Sun Jan 20, 2008 10:46 pm
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And changing the variable symbol isn't something you really want to do when you're writing packages that you want to be reused
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Vijilante
SubAdmin
Joined: 18 Nov 2001
Posts: 5182
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Posted: Sun Jan 20, 2008 10:53 pm
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The smart command line can't handle everything everyone want to be able to do. That is why we have a verbatim character.
| Code: |
| `gt @RRedtext @BBluetext |
Yes there may be a bug here. Examining the differences in how it compiles and outputs shows that it does not rebuild the string exactly right when it restores the nonvariable references. Your line "gt @RRedtext @BBluetext" actually compiles to
| Code: |
VARREF @RRedtext
VARREF @BBluetext
ALIAS gt(2) |
Then when it sees that no such alias exists it goes to the sending routine. When this finds that the variable doesn't exist it puts the original text back for that reference instead of the null that a script would get. The only record of the space being there originally is that the parameter count is 2. Essentially all the methods that are involved in building a parameter string either for %-1 or the smart command line are affected and can have missing or extra spaces. To demonstrate this use the following procedure
1. Launch CMud
2. CLose Sessions window (ESC)
3. Enter at the command line
| Code: |
| #alias gt {#SHOW gt '%-1'};#VAR a "something" |
4. Enter at the command line
| Code: |
gt @RRedtext @BBluetext
gt @RRedtext @a @BBluetext
gt @RRedtext something @BBluetext
gt @RRedtext @BBluetext @a
gt @RRedtext @BBluetext something |
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