Re: try command error codes, where documented?

On 8/16/2024 9:45 PM, greg wrote:

Am 16.08.24 um 20:28 schrieb et99:

Is there a good place to lookup the various error codes returned by tcl commands?
>
In the try command manual there's an example:
>
try {
     set f [open /some/file/name w]
} trap {POSIX EISDIR} {} {
     puts "failed to open /some/file/name: it's a directory"
} trap {POSIX ENOENT} {} {
     puts "failed to open /some/file/name: it doesn't exist"
}
>
How did the writer of this example know about these two error cases since they are not documented in the manual under either try or open.
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Also, are POSIX error codes system independent?
>
>

 Hello;
maybe this helps:
 https://www.tcl.tk/man/tcl8.6/TclCmd/tclvars.htm#M12
 source code tcl 8.6
./tcl8.6.14/win/tclWinError.c
/.tcl8.6.14/generic/tclPosixStr.c
  https://en.wikipedia.org/wiki/Errno.h

Thanks for the links.
I was afraid this was probably the only way to get the codes.
I think this could make a useful TIP - to add an error section to all command man pages as is done in the linux man pages.
If I were 30 years younger, with the inherent time and energy, I might have volunteered to do this, since it is obviously a tedious and perhaps thankless job.
I guess I will just stick to using my if-catch-template and not try to differentiate the particular errors. Besides, only I ever use my programs anymore :)
-e