diff --git a/sisl/io/bigdft/ascii.py b/sisl/io/bigdft/ascii.py
index cfbe41f39..832e949a8 100644
--- a/sisl/io/bigdft/ascii.py
+++ b/sisl/io/bigdft/ascii.py
@@ -27,6 +27,7 @@ class asciiSileBigDFT(SileBigDFT):
 
     def _setup(self, *args, **kwargs):
         """ Initialize for `asciiSileBigDFT` """
+        super()._setup(*args, **kwargs)
         self._comment = ['#', '!']
 
     @sile_fh_open()
diff --git a/sisl/io/gulp/got.py b/sisl/io/gulp/got.py
index 0c7bebdba..1729a9489 100644
--- a/sisl/io/gulp/got.py
+++ b/sisl/io/gulp/got.py
@@ -35,6 +35,7 @@ class gotSileGULP(SileGULP):
 
     def _setup(self, *args, **kwargs):
         """ Setup `gotSileGULP` after initialization """
+        super()._setup(*args, **kwargs)
         self._keys = dict()
         self.set_supercell_key('Cartesian lattice vectors')
         self.set_geometry_key('Final fractional coordinates')
diff --git a/sisl/io/openmx/omx.py b/sisl/io/openmx/omx.py
index cc1b97db1..ec4149ee3 100644
--- a/sisl/io/openmx/omx.py
+++ b/sisl/io/openmx/omx.py
@@ -58,6 +58,7 @@ def file(self):
 
     def _setup(self, *args, **kwargs):
         """ Setup the `omxSileOpenMX` after initialization """
+        super()._setup(*args, **kwargs)
         # These are the comments
         self._comment = ['#']
 
diff --git a/sisl/io/pdb.py b/sisl/io/pdb.py
index 5caf882bd..86b942be5 100644
--- a/sisl/io/pdb.py
+++ b/sisl/io/pdb.py
@@ -23,6 +23,7 @@ class pdbSile(Sile):
 
     def _setup(self, *args, **kwargs):
         """ Instantiate counters """
+        super()._setup(*args, **kwargs)
         self._model = 1
         self._serial = 1
         self._wrote_header = False
diff --git a/sisl/io/siesta/fdf.py b/sisl/io/siesta/fdf.py
index bdf5d839d..22438839e 100644
--- a/sisl/io/siesta/fdf.py
+++ b/sisl/io/siesta/fdf.py
@@ -96,6 +96,7 @@ class fdfSileSiesta(SileSiesta):
 
     def _setup(self, *args, **kwargs):
         """ Setup the `fdfSileSiesta` after initialization """
+        super()._setup(*args, **kwargs)
         self._comment = ['#', '!', ';']
 
         # List of parent file-handles used while reading
diff --git a/sisl/io/siesta/out.py b/sisl/io/siesta/out.py
index 3a418c426..14d5a076c 100644
--- a/sisl/io/siesta/out.py
+++ b/sisl/io/siesta/out.py
@@ -38,10 +38,14 @@ class outSileSiesta(SileSiesta):
 
     This enables reading the output quantities from the Siesta output.
     """
-    _completed = None
 
-    def readline(self):
-        line = super().readline()
+    def _setup(self, *args, **kwargs):
+        """ Ensure the class has a _completed tag """
+        super()._setup(*args, **kwargs)
+        self._completed = None
+
+    def readline(self, *args, **kwargs):
+        line = super().readline(*args, **kwargs)
         if 'Job completed' in line:
             self._completed = True
         return line
diff --git a/sisl/io/sile.py b/sisl/io/sile.py
index 36cc58d57..6f00cbba1 100644
--- a/sisl/io/sile.py
+++ b/sisl/io/sile.py
@@ -628,8 +628,11 @@ def line_has_keys(line, keys, case=True):
         return found
 
     def __iter__(self):
-        r""" Iterator for file """
-        yield from self.fh
+        """ Reading the entire content, without regarding comments """
+        l = self.readline(comment=True)
+        while l:
+            yield l
+            l = self.readline(comment=True)
 
     def readline(self, comment=False):
         r""" Reads the next line of the file """
diff --git a/sisl/io/table.py b/sisl/io/table.py
index ba7435096..11b94324a 100644
--- a/sisl/io/table.py
+++ b/sisl/io/table.py
@@ -71,6 +71,7 @@ class tableSile(Sile):
 
     def _setup(self, *args, **kwargs):
         """ Setup the `tableSile` after initialization """
+        super()._setup(*args, **kwargs)
         self._comment = ['#']
 
     @sile_fh_open()
diff --git a/sisl/io/tbtrans/sile.py b/sisl/io/tbtrans/sile.py
index 4996c341a..a0deb2b64 100644
--- a/sisl/io/tbtrans/sile.py
+++ b/sisl/io/tbtrans/sile.py
@@ -17,6 +17,7 @@ class SileCDFTBtrans(SileCDF):
 
     # all netcdf output should not be masked
     def _setup(self, *args, **kwargs):
+        super()._setup(*args, **kwargs)
         # all NetCDF routines actually returns masked arrays
         # this is to prevent TBtrans CDF files from doing this.
         if hasattr(self, "fh"):
diff --git a/sisl/io/vasp/car.py b/sisl/io/vasp/car.py
index 73b79c737..5a90600e8 100644
--- a/sisl/io/vasp/car.py
+++ b/sisl/io/vasp/car.py
@@ -25,6 +25,7 @@ class carSileVASP(SileVASP):
 
     def _setup(self, *args, **kwargs):
         """ Setup the `carSile` after initialization """
+        super()._setup(*args, **kwargs)
         self._scale = 1.
 
     @sile_fh_open()
diff --git a/sisl/io/vasp/out.py b/sisl/io/vasp/out.py
index de1f628f8..60f53b1c6 100644
--- a/sisl/io/vasp/out.py
+++ b/sisl/io/vasp/out.py
@@ -14,10 +14,14 @@
 @set_module("sisl.io.vasp")
 class outSileVASP(SileVASP):
     """ Output file from VASP """
-    _completed = None
 
-    def readline(self):
-        line = super().readline()
+    def _setup(self, *args, **kwargs):
+        """ Ensure the class has a _completed tag """
+        super()._setup(*args, **kwargs)
+        self._completed = None
+
+    def readline(self, *args, **kwargs):
+        line = super().readline(*args, **kwargs)
         if "General timing and accounting" in line:
             self._completed = True
         return line
diff --git a/sisl/io/wannier90/seedname.py b/sisl/io/wannier90/seedname.py
index dad9449cf..02a7f77ee 100644
--- a/sisl/io/wannier90/seedname.py
+++ b/sisl/io/wannier90/seedname.py
@@ -58,6 +58,7 @@ class winSileWannier90(SileWannier90):
 
     def _setup(self, *args, **kwargs):
         """ Setup `winSileWannier90` after initialization """
+        super()._setup(*args, **kwargs)
         self._comment = ['!', '#']
         self._seed = str(self.file).replace('.win', '')
 
diff --git a/sisl/io/xsf.py b/sisl/io/xsf.py
index 7ba780bc5..5eb110c7b 100644
--- a/sisl/io/xsf.py
+++ b/sisl/io/xsf.py
@@ -32,6 +32,7 @@ class xsfSile(Sile):
 
     def _setup(self, *args, **kwargs):
         """ Setup the `xsfSile` after initialization """
+        super()._setup(*args, **kwargs)
         self._comment = ['#']
 
     def _write_key(self, key):