Make sure to execute python2 scripts with python2

src/filters/rcldoc.py

@@ -133,10 +133,10 @@ class WordFilter:
             mt = self.mimetype(fn)
             self.em.rclog("rcldoc.py: actual MIME type %s" % mt)
             if mt == "text/plain":
-                return (["python", os.path.join(self.execdir, "rcltext.py")],
+                return ([sys.executable, os.path.join(self.execdir, "rcltext.py")],
                        WordPassData(self.em))
             elif mt == "text/rtf":
-                cmd = ["python", os.path.join(self.execdir, "rclrtf.py"),
+                cmd = [sys.executable, os.path.join(self.execdir, "rclrtf.py"),
                        "-s"]
                 self.em.rclog("rcldoc.py: returning cmd %s" % cmd)
                 return (cmd, WordPassData(self.em))

src/filters/rclppt.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python2
 
 # Recoll PPT text extractor
-# Msodump is not compatible with Python3 AFAIK, so this is stuck to
+# Mso-dumper is not compatible with Python3. We use sys.executable to
-# Python2 too
+# start the actual extractor, so we need to use python2 too.
 
 from __future__ import print_function
 
@@ -46,7 +46,7 @@ class PPTFilter:
         cmd = rclexecm.which("ppt-dump.py")
         if cmd:
             # ppt-dump.py often exits 1 with valid data. Ignore exit value
-            return (["python", cmd, "--no-struct-output", "--dump-text"],
+            return ([sys.executable, cmd, "--no-struct-output", "--dump-text"],
                     PPTProcessData(self.em), rclexec1.Executor.opt_ignxval)
         else:
             return ([], None)

src/filters/rclxls.py

@@ -1,7 +1,9 @@
 #!/usr/bin/env python2
 
 # Extractor for Excel files.
-# Mso-dumper is not compatible with Python3
+# Mso-dumper is not compatible with Python3. We use sys.executable to
+# start the actual extractor, so we need to use python2 too.
+
 import rclexecm
 import rclexec1
 import xlsxmltocsv
@@ -48,7 +50,7 @@ class XLSFilter:
         cmd = rclexecm.which("xls-dump.py")
         if cmd:
             # xls-dump.py often exits 1 with valid data. Ignore exit value
-            return (["python", cmd, "--dump-mode=canonical-xml", \
+            return ([sys.executable, cmd, "--dump-mode=canonical-xml", \
                      "--utf-8", "--catch"],
                     XLSProcessData(self.em), rclexec1.Executor.opt_ignxval)
         else: