Corrected the CLASS for custom macros in sky130_ef_sc_hd, and modified the fix_digital_lef.py script to correct the CLASS of vendor standard cells that need to be set to CLASS CORE SPACER. Solves open_pdks github issue tracker issue #270 from Arman Avetisyan.

diff --git a/VERSION b/VERSION
index be2a1fc..6698d2c 100644
--- a/VERSION
+++ b/VERSION

@@ -1 +1 @@
-1.0.326
+1.0.327

diff --git a/sky130/custom/scripts/fix_digital_lef.py b/sky130/custom/scripts/fix_digital_lef.py
index d0d13e0..5cf24a9 100755
--- a/sky130/custom/scripts/fix_digital_lef.py
+++ b/sky130/custom/scripts/fix_digital_lef.py

@@ -46,12 +46,17 @@
         if mmatch:
             macroname = mmatch.group(1)
 
-        # Check for "CLASS" related to "DIODE"
+        # Check for "CLASS" related to "DIODE" and also fill/decap cells
         cmatch = classrex.match(line)
         if cmatch and macroname:
             if '__diode_' in macroname:
-                line = '  CLASS CORE ANTENNACELL ;'
-                modified = True
+                if 'ANTENNACELL' not in line:
+                    line = '  CLASS CORE ANTENNACELL ;'
+                    modified = True
+            elif '__fill_' in macroname or '__decap_' in macroname:
+                if 'SPACER' not in line:
+                    line = '  CLASS CORE SPACER ;'
+                    modified = True
 
         fixedlines.append(line)
 

diff --git a/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__decap_12.lef b/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__decap_12.lef
index e790b49..112d043 100644
--- a/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__decap_12.lef
+++ b/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__decap_12.lef

@@ -3,7 +3,7 @@
   DIVIDERCHAR "/" ;
   BUSBITCHARS "[]" ;
 MACRO sky130_ef_sc_hd__decap_12
-  CLASS BLOCK ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_ef_sc_hd__decap_12 ;
   ORIGIN 0.000 0.000 ;
   SIZE 5.520 BY 2.720 ;

diff --git a/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__fill_12.lef b/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__fill_12.lef
index 1087873..5e28142 100644
--- a/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__fill_12.lef
+++ b/sky130/custom/sky130_fd_sc_hd/lef/sky130_ef_sc_hd__fill_12.lef

@@ -3,7 +3,7 @@
   DIVIDERCHAR "/" ;
   BUSBITCHARS "[]" ;
 MACRO sky130_ef_sc_hd__fill_12
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_ef_sc_hd__fill_12 ;
   ORIGIN 0.000 0.000 ;
   SIZE 5.520 BY 2.720 ;