rclpdf: restore pdfextrametafix function and add test

tests/config/pdfemf.py

@@ -0,0 +1,23 @@
+import sys
+import re
+
+class MetaFixer(object):
+    def __init__(self):
+        pass
+
+    def metafix(self, nm, txt):
+        #print("Metafixer: mfix: nm [%s] txt [%s]" % (nm, txt), file=sys.stderr)
+        if nm == 'pdf:Producer':
+            txt += " metafixerunique"
+        elif nm == 'someothername':
+            # do something else
+            pass
+        elif nm == 'stillanother':
+            # etc.
+            pass
+        
+        return txt
+
+    def wrapup(self, metaheaders):
+        #print("Metafixer: wrapup: %s" % metaheaders, file=sys.stderr)
+        pass

tests/config/recoll.conf

@@ -39,6 +39,8 @@ daemSkippedPaths =  \
 unac_except_trans = åå Åå ää Ää öö Öö üü Üü ßss œoe Œoe æae ÆAE fifi flfl
 
 pdfextrameta = pdf:Producer dc:identifier
+pdfextrametafix = /home/dockes/projets/fulltext/recoll/tests/config/pdfemf.py
+
 [/home/dockes/projets/fulltext/testrecoll/pdf]
 pdfocr = 1
 pdfocrlang = eng