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Ihr Re: [vtcl] Weird -command problem
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Von: SRV_RU_NOTES1/Weru AG
Datum: 13.02.98 15:36:12 PST
Thema: Re: [vtcl] Weird -command problem
Jim Kraai wrote:
>
> Greetings,
>
> I had a weird one last night w/ vtcl 1.10 over Linux (RH4.2).
>
> I made a button and put a command in it, something like this:
> "if {[check_proc "Check proc test string]} {
> " puts "check was ok, ent(asdf) is $ent(asdf)
> ")
>
> When I tried to run the script, it gave me a compile error.
>
> When I looked at the auto-generated code, I saw something like
> this:
> "... \
> "-command \n
> "if\ {\[check_proc\ \"Check\ proc\ test\ string\]}\ \{\n
> "\ \ \ \ puts\ \"check\ was\ ok,\ ent\(asdf\)\ is\ \$ent\(asdf\)\n
> "\)\n\n
>
> When I expected:
> "... \
> "-command {
> "if {[check_proc "Check proc test string]} {
> " puts "check was ok, ent(asdf) is $ent(asdf)
> ")}
>
> Note that the code that I put into the command was not enclosed by
> curly-braces by vtcl.
>
> check_proc is defined and returns zero or one. Now, the array,
> ent, is globally defined, and didn't seem to be the problem. When
> I removed the reference to ent, the problems didn't go away.
>
> Ultimately, I copied another button that was working and changed
> the code to match what I wanted and everything worked fine.
>
> My question is, what went awry? Is this a 'feature' that I can
> exploit in the future?
>
> Just thought this was interesting and worth note.
>
> --jim
Mr Jim,
You have sent the problem in a hurry!! I think now you have already
got
the solution. your check_proc procedure may be right, but the if
construct itsef is wrong.
"if {[check_proc "Check proc test string]} {
" puts "check was ok, ent(asdf) is $ent(asdf)
")
Errors in it.
1.quotes are not completed in
"Check proc test string
2.similarly uncomleted quotes in
puts "check was ok, ent(asdf) is $ent(asdf)
3.body of If loop, is ended in
")" (bracket), but it should be "}" (curly brace)
These are the common mistakes, we human beings usually do, but..
The command that yopu give will be stored as a buffer and will be copied
to the file as it is..
According to your statement, It noticed that
"Check proc test string]} {
puts "check was ok, ent(asdf) is $ent(asdf)
"
which is under quotes, as argument to your procedure check_proc and it
cleary appended your keystrokes into the file.
That's all
really U have created some nice error. ThanX.
Regards.
Hamps
--
> //// //// / Girish B Hampali Processor Systems (India) pvt ltd<
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