Possible bug? Difficulty passing parameters to a QB64 program with COMMAND$

[FellippeHeitor]

Thanks for chiming in, @mpgcan.

The rules above come from https://docs.microsoft.com/en-us/cpp/c-language/parsing-c-command-line-arguments?view=msvc-160&viewFallbackFrom=vs-2017

The code sample provided in that page, simplified/adapted to be compiled with the c compiler we ship:

Code: C++: [Select]

1. // ARGS.C illustrates the following variables used for accessing
2. // command-line arguments and environment variables:
3. // argc  argv  envp
4. //
5.  
6. #include <stdio.h>
7.  
8. void main( int argc, // Number of strings in array argv
9. char *argv[],      // Array of command-line argument strings
10. char **envp )      // Array of environment variable strings
11. {
12.     int count;
13.  
14.     // Display each command-line argument.
15.     printf( "\nCommand-line arguments:\n" );
16.     for( count = 0; count < argc; count++ )
17.         printf( "  argv[%d]   %s\n", count, argv[count] );
18.        
19.     return;
20. }

The result:

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As I stated earlier, there's nothing in the QB64 code that's stripping backslashes. The behavior is inherent to Windows' handling of the command line.

[FellippeHeitor]

The workaround, as also indicated above, is to double the last backslash:

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[hanness]

Thanks. I very much appreciate the analysis. What's odd is that I don't see anything in those rules to explain this particular result:

C:\QB64_Test>test "\\?\Volume{06b8848c-3cfc-11eb-a783-60f2624ff3b8}\My Media"
Parameter 1 is : \\My Media

However, I'm not really going to spend any more cycles figuring that part out because it's a moot point now.

Fortunately, this was going to be for a rather small utility and I can write this up as a batch file easily enough.

[SMcNeill]

\\My Media is probably a system mapped shortcut, like My Music and My Pictures.

The full path would be something like C:\Users\Bob\My Media, with a network mapping of \\My Media as a shortcut to them.

For whatever reason, windows is returning and passing the registered shortcut rather than the full path, for this shortcut.