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diff --git a/support/latexmk/example_rcfiles/clean_pattern_latexmkrc b/support/latexmk/example_rcfiles/clean_pattern_latexmkrc
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+# To allow more general pattern in $clean_ext instead of just an
+# extension or something containing %R.
+# This is done by overriding latexmk's cleanup1 subroutine.
+
+# Here is an example of a usefule application:
+$clean_ext = "*-eps-converted-to.pdf";
+
+sub cleanup1 {
+    # Usage: cleanup1( directory, pattern_or_ext_without_period, ... )
+    #
+    # The directory is a fixed name, so I must escape any glob metacharacters
+    #   in it:
+    print "========= MODIFIED cleanup1 cw latexmk v. 4.39 and earlier\n";
+    my $dir = fix_pattern( shift );
+
+    # Change extensions to glob patterns
+    foreach (@_) { 
+        # If specified pattern is pure extension, without period,
+        #   wildcard character (?, *) or %R,
+        # then prepend it with directory/root_filename and period to
+        #   make a full file specification
+        # Else leave the pattern as is, to be used by glob.
+        # New feature: pattern is unchanged if it contains ., *, ?
+        (my $name = (/%R/ || /[\*\.\?]/) ? $_ : "%R.$_") =~ s/%R/$dir$root_filename/;
+        unlink_or_move( glob( "$name" ) );
+    }
+} #END cleanup1
+
+
+