[MacPorts] #74291: grace @5.1.25_6: all file dialogs fail with "No file name given" when built against Motif 2.5.2

[MacPorts]

#74291: grace @5.1.25_6: all file dialogs fail with "No file name given" when built
against Motif 2.5.2
--------------------+--------------------
 Reporter:  sjc999  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:
--------------------+--------------------
 Grace starts normally and can be used interactively, but every operation
 that requires selecting a file fails.
 Examples:
 File → Open
 File → Save...
 Data → Import → ASCII
 All produce:
 [Error] No file name given
 despite a filename being selected in the file selection dialog.
 This makes it impossible to open or save files using the GUI.

 In one case, after changing the save location to my home directory, Grace
 did not report the error. Instead, it created a file in the original
 working directory named:
 FONTLIST_DEFAULT_TAG
 rather than using the selected filename.
 FONTLIST_DEFAULT_TAG appears to be an internal Motif symbol, suggesting
 the filename returned from the file selection dialog is incorrect.
 Steps to reproduce
 Start xmgrace.
 Select Data → Import → ASCII (or File → Open or File → Save).
 Select any file and press OK.
 Grace reports:
 [Error] No file name given
 or, occasionally, creates a file named FONTLIST_DEFAULT_TAG.

-- 
Ticket URL: <https://trac.macports.org/ticket/74291>
MacPorts <https://www.macports.org/>
Ports system for macOS