diff --git a/buildroot/share/scripts/pinsformat.js b/buildroot/share/scripts/pinsformat.js
index 89e99b73bd..41bdfdab87 100755
--- a/buildroot/share/scripts/pinsformat.js
+++ b/buildroot/share/scripts/pinsformat.js
@@ -10,6 +10,11 @@
 
 const fs = require("fs");
 
+var do_log = false
+function logmsg(msg, line='') {
+  if (do_log) console.log(msg, line);
+}
+
 // String lpad / rpad
 String.prototype.lpad = function(len, chr) {
   if (!len) return this;
@@ -37,7 +42,7 @@ String.prototype.concat_with_space = function(str) {
 };
 
 const mpatt = [ '-?\\d{1,3}', 'P[A-I]\\d+', 'P\\d_\\d+', 'Pin[A-Z]\\d\\b' ],
-      definePatt = new RegExp(`^\\s*(//)?#define\\s+[A-Z_][A-Z0-9_]+\\s+(${mpatt[0]}|${mpatt[1]}|${mpatt[2]}|${mpatt[3]})\\s*(//.*)?$`, 'gm'),
+      definePatt = new RegExp(`^\\s*(//)?#define\\s+[A-Z_][A-Z0-9_]+\\s+(${'|'.join(mpatt)})\\s*(//.*)?$`, 'gm'),
       ppad = [ 3, 4, 5, 5 ],
       col_comment = 50,
       col_value_rj = col_comment - 3;
@@ -47,11 +52,11 @@ for (let m of mpatt) mexpr.push(new RegExp('^' + m + '$'));
 
 const argv = process.argv.slice(2), argc = argv.length;
 
-var src_file = 0, src_name = 'STDIN', dst_file, do_log = false;
+var src_file = 0, dst_file;
 if (argc > 0) {
   let ind = 0;
   if (argv[0] == '-v') { do_log = true; ind++; }
-  dst_file = src_file = src_name = argv[ind++];
+  dst_file = src_file = argv[ind++];
   if (ind < argc) dst_file = argv[ind];
 }
 
@@ -115,13 +120,13 @@ function process_text(txt) {
       //
       // #define SKIP_ME
       //
-      if (do_log) console.log("skip:", line);
+      logmsg("skip:", line);
     }
     else if ((r = pindefPatt.exec(line)) !== null) {
       //
       // #define MY_PIN [pin]
       //
-      if (do_log) console.log("pin:", line);
+      logmsg("pin:", line);
       const pinnum = r[4].charAt(0) == 'P' ? r[4] : r[4].lpad(patt.pad);
       line = r[1] + ' ' + r[3];
       line = line.rpad(col_value_lj).concat_with_space(pinnum);
@@ -131,7 +136,7 @@ function process_text(txt) {
       //
       // #define MY_PIN -1
       //
-      if (do_log) console.log("pin -1:", line);
+      logmsg("pin -1:", line);
       line = r[1] + ' ' + r[3];
       line = line.rpad(col_value_lj).concat_with_space('-1');
       if (r[5]) line = line.rpad(col_comment).concat_with_space(r[5]);
@@ -139,14 +144,15 @@ function process_text(txt) {
     else if (skipPatt2.exec(line) !== null || skipPatt3.exec(line) !== null) {
       //
       // #define SKIP_ME
+      // #else, #endif
       //
-      if (do_log) console.log("skip:", line);
+      logmsg("skip:", line);
     }
     else if ((r = aliasPatt.exec(line)) !== null) {
       //
       // #define ALIAS OTHER
       //
-      if (do_log) console.log("alias:", line);
+      logmsg("alias:", line);
       line = r[1] + ' ' + r[3];
       line = line.concat_with_space(r[4].lpad(col_value_rj + 1 - line.length));
       if (r[5]) line = line.rpad(col_comment).concat_with_space(r[5]);
@@ -155,7 +161,7 @@ function process_text(txt) {
       //
       // #define SWITCH
       //
-      if (do_log) console.log("switch:", line);
+      logmsg("switch:", line);
       line = r[1] + ' ' + r[3];
       if (r[4]) line = line.rpad(col_comment).concat_with_space(r[4]);
       check_comment_next = true;
@@ -164,7 +170,7 @@ function process_text(txt) {
       //
       // #define ...
       //
-      if (do_log) console.log("def:", line);
+      logmsg("def:", line);
       line = r[1] + ' ' + r[3] + ' ';
       line = line.concat_with_space(r[4].lpad(col_value_rj + 1 - line.length));
       if (r[5]) line = line.rpad(col_comment - 1) + ' ' + r[5];
@@ -173,7 +179,7 @@ function process_text(txt) {
       //
       // #undef ...
       //
-      if (do_log) console.log("undef:", line);
+      logmsg("undef:", line);
       line = r[1] + ' ' + r[3];
       if (r[4]) line = line.rpad(col_comment).concat_with_space(r[4]);
     }
@@ -181,7 +187,7 @@ function process_text(txt) {
       //
       // #if, #ifdef, #ifndef, #elif ...
       //
-      if (do_log) console.log("cond:", line);
+      logmsg("cond:", line);
       line = r[1].rpad(col_comment).concat_with_space(r[5]);
       check_comment_next = true;
     }
diff --git a/buildroot/share/scripts/pinsformat.py b/buildroot/share/scripts/pinsformat.py
index 3a376ecc7e..b49ae4931d 100755
--- a/buildroot/share/scripts/pinsformat.py
+++ b/buildroot/share/scripts/pinsformat.py
@@ -17,15 +17,13 @@ def logmsg(msg, line):
 col_comment = 50
 
 # String lpad / rpad
-def lpad(astr, fill, c=None):
+def lpad(astr, fill, c=' '):
     if not fill: return astr
-    if c == None: c = ' '
     need = fill - len(astr)
     return astr if need <= 0 else (need * c) + astr
 
-def rpad(astr, fill, c=None):
+def rpad(astr, fill, c=' '):
     if not fill: return astr
-    if c == None: c = ' '
     need = fill - len(astr)
     return astr if need <= 0 else astr + (need * c)
 
@@ -64,9 +62,8 @@ def format_pins(argv):
         # If no source file specified read from STDIN
         file_text = sys.stdin.read()
     else:
-        # Open the file src_file
-        with open(src_file, 'r') as rf:
-            file_text = rf.read()
+        # Open and read the file src_file
+        with open(src_file, 'r') as rf: file_text = rf.read()
 
     if len(file_text) == 0:
         print('No text to process')
@@ -75,8 +72,7 @@ def format_pins(argv):
     # Read from file or STDIN until it terminates
     filtered = process_text(file_text)
     if dst_file:
-        with open(dst_file, 'w') as wf:
-            wf.write(filtered)
+        with open(dst_file, 'w') as wf: wf.write(filtered)
     else:
         print(filtered)
 
@@ -105,16 +101,18 @@ def process_text(txt):
     patt = get_pin_pattern(txt)
     if patt == None: return txt
 
-    pindefPatt = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+(' + patt['match'] + r')\s*(//.*)?$')
-    noPinPatt = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+(-1)\s*(//.*)?$')
-    skipPatt1 = re.compile(r'^(\s*(//)?#define)\s+(AT90USB|USBCON|(BOARD|DAC|FLASH|HAS|IS|USE)_.+|.+_(ADDRESS|AVAILABLE|BAUDRATE|CLOCK|CONNECTION|DEFAULT|FREQ|ITEM|MODULE|NAME|ONLY|PERIOD|RANGE|RATE|SERIAL|SIZE|SPI|STATE|STEP|TIMER))\s+(.+)\s*(//.*)?$')
-    skipPatt2 = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+(0x[0-9A-Fa-f]+|\d+|.+[a-z].+)\s*(//.*)?$')
-    aliasPatt = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+([A-Z_][A-Z0-9_()]+)\s*(//.*)?$')
+    pmatch = patt['match']
+    pindefPatt = re.compile(rf'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+({pmatch})\s*(//.*)?$')
+    noPinPatt  = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+(-1)\s*(//.*)?$')
+    skipPatt1  = re.compile(r'^(\s*(//)?#define)\s+(AT90USB|USBCON|(BOARD|DAC|FLASH|HAS|IS|USE)_.+|.+_(ADDRESS|AVAILABLE|BAUDRATE|CLOCK|CONNECTION|DEFAULT|ERROR|EXTRUDERS|FREQ|ITEM|MKS_BASE_VERSION|MODULE|NAME|ONLY|ORIENTATION|PERIOD|RANGE|RATE|READ_RETRIES|SERIAL|SIZE|SPI|STATE|STEP|TIMER|VERSION))\s+(.+)\s*(//.*)?$')
+    skipPatt2  = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+(0x[0-9A-Fa-f]+|\d+|.+[a-z].+)\s*(//.*)?$')
+    skipPatt3  = re.compile(r'^\s*#e(lse|ndif)\b.*$')
+    aliasPatt  = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+([A-Z_][A-Z0-9_()]+)\s*(//.*)?$')
     switchPatt = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s*(//.*)?$')
-    undefPatt = re.compile(r'^(\s*(//)?#undef)\s+([A-Z_][A-Z0-9_]+)\s*(//.*)?$')
-    defPatt = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+([-_\w]+)\s*(//.*)?$')
-    condPatt = re.compile(r'^(\s*(//)?#(if|ifn?def|else|elif)(\s+\S+)*)\s+(//.*)$')
-    commPatt = re.compile(r'^\s{20,}(//.*)?$')
+    undefPatt  = re.compile(r'^(\s*(//)?#undef)\s+([A-Z_][A-Z0-9_]+)\s*(//.*)?$')
+    defPatt    = re.compile(r'^(\s*(//)?#define)\s+([A-Z_][A-Z0-9_]+)\s+([-_\w]+)\s*(//.*)?$')
+    condPatt   = re.compile(r'^(\s*(//)?#(if|ifn?def|elif)(\s+\S+)*)\s+(//.*)$')
+    commPatt   = re.compile(r'^\s{20,}(//.*)?$')
 
     col_value_lj = col_comment - patt['pad'] - 2
     col_value_rj = col_comment - 3
@@ -136,7 +134,7 @@ def process_text(txt):
         if r == None: return False
         logmsg("pin:", line)
         pinnum = r[4] if r[4][0] == 'P' else lpad(r[4], patt['pad'])
-        line = r[1] + ' ' + r[3]
+        line = f'{r[1]} {r[3]}'
         line = rpad(line, col_value_lj) + pinnum
         if r[5]: line = rpad(line, col_comment) + r[5]
         d['line'] = line
@@ -150,7 +148,7 @@ def process_text(txt):
         r = noPinPatt.match(line)
         if r == None: return False
         logmsg("pin -1:", line)
-        line = r[1] + ' ' + r[3]
+        line = f'{r[1]} {r[3]}'
         line = rpad(line, col_value_lj) + '-1'
         if r[5]: line = rpad(line, col_comment) + r[5]
         d['line'] = line
@@ -164,6 +162,14 @@ def process_text(txt):
         logmsg("skip:", d['line'])
         return True
 
+    #
+    # #else|endif
+    #
+    def trySkip3(d):
+        if skipPatt3.match( d['line']) == None: return False
+        logmsg("skip:", d['line'])
+        return True
+
     #
     # #define ALIAS OTHER
     #
@@ -220,7 +226,7 @@ def process_text(txt):
         return True
 
     #
-    # #if ...
+    # #if|ifdef|ifndef|elif ...
     #
     def tryCond(d):
         line = d['line']
@@ -243,18 +249,19 @@ def process_text(txt):
             wDict['check_comment_next'] = (r != None)
 
         if wDict['check_comment_next']:
-            # Comments in column 45
+            # Comments in column 50
             line = rpad('', col_comment) + r[1]
 
         elif trySkip1(wDict):   pass  #define SKIP_ME
         elif tryPindef(wDict):  pass  #define MY_PIN [pin]
         elif tryNoPin(wDict):   pass  #define MY_PIN -1
         elif trySkip2(wDict):   pass  #define SKIP_ME_TOO
+        elif trySkip3(wDict):   pass  #else|endif
         elif tryAlias(wDict):   pass  #define ALIAS OTHER
         elif trySwitch(wDict):  pass  #define SWITCH
         elif tryDef(wDict):     pass  #define ...
         elif tryUndef(wDict):   pass  #undef ...
-        elif tryCond(wDict):    pass  #if ...
+        elif tryCond(wDict):    pass  #if|ifdef|ifndef|elif ...
 
         out += wDict['line'] + '\n'