Nothing to do with Tcl 8.6 either :-)


From the DOS prompt:

D:\src\tcl-csv\library>cmd /C /E:ON dir
The filename, directory name, or volume label syntax is incorrect.

The /C needs to be before dir

D:\src\tcl-csv\library>cmd /E:ON /C dir
Volume in drive D is DATA
Volume Serial Number is 8245-4F72

Directory of D:\src\tcl-csv\library
....




On 9/30/2024 9:05 PM, Michael Soyka wrote:

For a change of pace, this will not be a Tcl 9 question (I'm using 8.6.14).

Using tclsh, why does this succeed:
    exec -- cmd /C dir

but this fails:
    exec -- cmd /C /E:ON dir

with this message :
    "The filename, directory name, or volume label syntax is incorrect."

I'm guessing that "exec" is treating /E:ON as a file spec (the colon
maybe?) and then changes it somehow.

A followup question is how can I see what string is being presented to
to Windows?

Thanks for answering.

-mike

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On 9/30/2024 8:35 AM, Michael Soyka wrote:

A followup question is how can I see what string is being presented to to Windows?

My goto tool is process explorer, much more detailed that windows task manager, just hover mouse over any process and it will tell you the command line that was ultimately received (or click and choose properties)

https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

This is a no-install program, you can just run it.

Using twapi, and if you exec with & you will get the pid, you can then use:

twapi::get_process_commandline PID ?options?


-e

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On 9/30/2024 11:15 AM, et99 wrote:

On 9/30/2024 8:35 AM, Michael Soyka wrote:

A followup question is how can I see what string is being presented to to Windows?

My goto tool is process explorer, much more detailed that windows task manager, just hover mouse over any process and it will tell you the command line that was ultimately received (or click and choose properties)

https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

This is a no-install program, you can just run it.

Using twapi, and if you exec with & you will get the pid, you can then use:

twapi::get_process_commandline PID ?options?

-e

Hmmm, it just occurred to me that if the process dies immediately, you might not have a chance with process explorer, and don't know if the get_process_commandline will be quick enough either.

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