CI fails tests printing comma on Windows

[flukiluke]

Describe the bug
#671 attempted to add a test case with the command Print "abc" , "def". This caused the test execution to hang indefinitely, but only on the Windows runners.

Initial analysis by @RhoSigma-QB64:

when redirected into a file, then it never writes the string after the comma, but is keep writing spaces into eternity instead, until you CTRL-C the process, what we can't do on the github runners.

To Reproduce
Likely reproduction, to be investigated.

$console:only
Print "abc", "def"

Compile & run on Windows. Redirect output to a file: test.exe > out.log.

Expected behavior
It should just write 5 spaces after "abc" to get to the next tab and then print "def". This works when output goes to the Windows cosole window but shows the described failure when output is redirected into a file.

Desktop (please complete the following information):

• OS: Windows (all runners x86, x64, arm64), also manually confirmed on a Win7-x64 system by @RhoSigma-QB64
• Version latest main

[RhoSigma-QB64]

Additionally the behavior on Linux and Mac should be verified, Obviously the comma in the PRINT command does not tab to the next position as advertised in the Wiki, but only writing a single separating space like abc def.

[flukiluke]

Upon inspection, the implementation of tab() at https://github.com/QB64-Phoenix-Edition/QB64pe/blob/d88d963c7d07c73f651647f73d7c77776b8ed628/internal/c/libqb.cpp#L11333 looks incredibly suspicious. To summarise:

• If _DEST is _CONSOLE on Windows, keep printing spaces until the cursor position is a multiple of 10. My guess is func_pos() is returning a constant value when writing to a file, so this is what caused the hang in the test.
• For text modes, print a single space until the cursor position is a multiple of 14.
  • Unless printing a single space results in the cursor being at column 1. My guess is this was to handle line wrapping, but also accidentally catches the linux console because the cursor column is always 1 (hence a single space on Linux).
• The rest is for graphics modes.

I think this function might need to be rewritten, or severely refactored.