[bug #62055] [pdfpic] should handle temporary files as the rest of groff does

[G. Branden Robinson]

Update of bug #62055 (project groff):

                  Status:             In Progress => Fixed                  
         Planned Release:                    None => 1.23.0                 

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Follow-up Comment #1:


commit afc1999af86d95d0dfce22235c8bf4c02154c917
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
Date:   Tue Feb 15 19:30:50 2022 +1100

    [pdfpic]: Fix Savannah #62055 for Unix systems.
    
    * tmac/pdfpic.tmac: Search for temporary directories as groff(1) does,
      instead of going straight to /tmp.
    
      (pdfpic@get-temporary-directory): New function checks each of its
      arguments for validity as a temporary directory; if one is found, its
      name is left in `pdfpic*temporary-directory`.
    
      (pdfpic@cleanup): Remove strings `pdfpic*temporary-directory` and
      `pdfpic*temporary-file`.
    
      (PDFPIC): Call `pdfpic@get-temporary-directory`, using the contents of
      the environment variables $GROFF_TMPDIR and $TMPDIR, and then /tmp, in
      that order.  Store the temporary file name in string
      `pdfpic*temporary-file`.  Use this string in subsequent `sy` and `so`
      requests.
    
    Fixes <https://savannah.gnu.org/bugs/?62055> for Unix systems.

commit 24900cf6d73088e4b00c797221ede1b5ac36d863
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
Date:   Tue Feb 15 19:47:25 2022 +1100

    [pdfpic]: Fix Savannah #62055 for Cygwin/MinGW.
    
    * tmac/pdfpic.tmac: Add support for Cygwin/MinGW temporary directory
      conventions.


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