Fix :hardcopy not working in macOS 13 Ventura

runtime/autoload/macvim.vim

@@ -1,7 +1,7 @@
 vim9script
 # Support scripts for MacVim-specific functionality
 # Maintainer:   Yee Cheng Chin (macvim-dev@macvim.org)
-# Last Change:  2022-10-14
+# Last Change:  2023-03-15
 
 # Retrieves the text under the selection, without polluting the registers.
 # This is easier if we could yank, but we don't know what the user has been
@@ -76,4 +76,44 @@ export def ShowDefinitionUnderCursor()
   endif
 enddef
 
+# Print functionality. We simply show the file in Preview and let the user
+# decide what to do. This allows for more control instead of immediately
+# piping the file to lpr which will actually print the file.
+#
+# PreviewConvertPostScript: 
+#   Convert the provided PostScript file to PDF, then show in Preview. This is
+#   necessary in macOS 13+ as Preview doesn't support .ps files anymore.
+# PreviewPostScript:
+#   Directly open PostScript file in Preview. Can use this if
+#   PreviewConvertPostScript doesn't work.
+export def PreviewConvertPostScript(deltimer = 10000): number
+  # Convert PS to PDF because Preview can't use PS files in macOS 13+
+  system($"pstopdf {v:fname_in} -o {v:fname_in}.pdf")
+  if v:shell_error != 0
+    return v:shell_error
+  endif
+  system($"open -a Preview {v:fname_in}.pdf")
+  delete(v:fname_in)
+
+  # Delete the file after it's opened in Preview for privacy. We don't have an
+  # easy way to detect that Preview has opened the file already, so we just
+  # use a generous 10 secs timer.
+  # Note that we can't use `open -W` instead because 1) it will block
+  # synchronously, and 2) it will only return if Preview.app has closed, which
+  # may not happen for a while if it has other unrelated documents opened.
+  var to_delete_file = $"{v:fname_in}.pdf"
+  timer_start(deltimer, (timer) => delete(to_delete_file))
+
+  return v:shell_error
+enddef
+
+export def PreviewPostScript(deltimer = 10000): number
+  system($"open -a Preview {v:fname_in}")
+
+  var to_delete_file = v:fname_in
+  timer_start(deltimer, (timer) => delete(to_delete_file))
+
+  return v:shell_error
+enddef
+
 # vim: set sw=2 ts=2 et :

runtime/doc/gui_mac.txt

@@ -930,8 +930,8 @@ prominent bugs/missing features.
 - Sometimes multibyte characters look "too wide", i.e. they overlap the
   following character.  It might help to change 'ambiwidth', or override the
   automatic font substitution by setting 'guifontwide' manually.
-- Printing.  As a temporary solution <D-p> creates a PostScript file which is
-  then opened in Preview where it may be printed. See |hardcopy|.
+- Built-in printing.  |:hardcopy| / <D-p> creates a PDF file which is then
+  opened in Preview where it may be printed.  See |pexpr-option|.
 
 General bugs and issues are tracked on Github.  If you find new bugs or have
 feature requests then please file an issue there:

runtime/doc/print.txt

@@ -47,6 +47,8 @@ Note: If you have problems printing with |:hardcopy|, an alternative is to use
 			paper size, duplex, etc.
 			Note: If you want PDF, there are tools such as
 			"ps2pdf" that can convert the PostScript to PDF.
+			On macOS, you can also use "pstopdf" which comes
+			bundled with the system.
 
 :[range]ha[rdcopy][!] >{filename}
 			As above, but write the resulting PostScript in file
@@ -136,8 +138,13 @@ The arguments to the ":hardcopy" command are in |v:cmdarg|.
 The expression must take care of deleting the file after printing it.
 When there is an error, the expression must return a non-zero number.
 If there is no error, return zero or an empty string.
-The default for non MS-Windows or VMS systems is to simply use "lpr" to print
-the file: >
+
+The default for MacVim is to convert the PostScript file to PDF and then open
+it in Preview.app where you can print from there, using the function
+`macvim#PreviewConvertPostScript()`.
+
+The default for other non MS-Windows or VMS systems is to simply use "lpr" to
+print the file: >
 
     system('lpr' .. (&printdevice == '' ? '' : ' -P' .. &printdevice)
 	.. ' ' .. v:fname_in) .. delete(v:fname_in) + v:shell_error

src/MacVim/gvimrc

@@ -32,9 +32,8 @@ if empty(&guitablabel)
   set guitablabel=%M%t
 endif
 
-" Send print jobs to Preview.app.  This does not delete the temporary ps file
-" that is generated by :hardcopy.
-set printexpr=system('open\ -a\ Preview\ '.v:fname_in)\ +\ v:shell_error
+" Send print jobs to Preview.app.  The user can then print from it.
+set printexpr=macvim#PreviewConvertPostScript()
 
 " askpass
 let $SSH_ASKPASS = simplify($VIM . '/../../Resources') . '/macvim-askpass'