I had this set in the configuration for Editor (same as is v2.52):
Command: c:\EMACS22\bin\gnuclientw.exe -q -F
Arguments: ($Name)
Initial Directory: ($FullPath)
Pressing F4 to edit a file worked in v2.52. But in v2.53 beta 1, it no longer works.
I get a message box:
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Error
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Cannot execute external editor 'c:\EMACS22\bin\gnuclientw.exe -q -F'.
(2) The system cannot find the file specified.
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[OK]
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After playing with it a bit, I figured out to put the Emacs switches into Arguments:
Command: c:\EMACS22\bin\gnuclientw.exe
Arguments: -q -F ($Name)
Initial Directory: ($FullPath)
This works.
So no need for a bug report. Just alerting folks in case anyone has the same problem.