--- a/CharacterArray.st	Wed Mar 27 18:42:53 2019 +0100
+++ b/CharacterArray.st	Wed Mar 27 19:29:36 2019 +0100
@@ -371,7 +371,6 @@
     "Modified: / 16-01-2018 / 18:59:04 / stefan"
 ! !
 
-
 !CharacterArray class methodsFor:'cleanup'!
 
 lowSpaceCleanup
@@ -634,7 +633,6 @@
     "
 ! !
 
-
 !CharacterArray class methodsFor:'pattern matching'!
 
 matchEscapeCharacter
@@ -1042,7 +1040,6 @@
     ^ Unicode32String
 ! !
 
-
 !CharacterArray class methodsFor:'utilities'!
 
 through:aCharacter in:inStream 
@@ -4303,7 +4300,7 @@
     "redefined to allow characters and mixed strings to be appended.
      This is nonStandard, but convenient"
 
-    |myWidth otherWidth stringifiedArg|
+    |myWidth otherWidth stringifiedArg newString l1 l2 combinedLen|
 
     aStringOrCharacterOrAnyOther isCharacter ifTrue:[
         ^ self copyWith:aStringOrCharacterOrAnyOther
@@ -4314,10 +4311,17 @@
     stringifiedArg := aStringOrCharacterOrAnyOther asString.
     stringifiedArg isString ifTrue:[
         (otherWidth := stringifiedArg bitsPerCharacter) ~~ (myWidth := self bitsPerCharacter) ifTrue:[
+            l1 := self size.
+            l2 := aStringOrCharacterOrAnyOther size.
+            combinedLen := l1 + l2.
             otherWidth > myWidth ifTrue:[
-                ^ (stringifiedArg species fromString:self) , stringifiedArg
+                newString := stringifiedArg species uninitializedNew:combinedLen.    
+            ] ifFalse:[
+                newString := self species uninitializedNew:combinedLen.    
             ].
-            ^ self , (self species fromString:stringifiedArg)
+            newString replaceFrom:1 to:l1 with:self startingAt:1.
+            newString replaceFrom:l1+1 to:l1+l2 with:aStringOrCharacterOrAnyOther startingAt:1.
+            ^ newString
         ].
     ].
     ^ super , stringifiedArg
@@ -4337,7 +4341,8 @@
      'hello',123,'world' allBold
     "
 
-    "Modified: 28.6.1997 / 00:13:17 / cg"
+    "Modified: / 28-06-1997 / 00:13:17 / cg"
+    "Modified: / 27-03-2019 / 19:28:36 / Claus Gittinger"
 !
 
 ,, aString
@@ -5247,8 +5252,6 @@
 ! !
 
 
-
-
 !CharacterArray methodsFor:'matching - glob expressions'!
 
 compoundMatch:aString
@@ -6056,7 +6059,6 @@
 ! !
 
 
-
 !CharacterArray methodsFor:'padded copying'!
 
 centerPaddedTo:newSize
@@ -7211,7 +7213,6 @@
     "Modified: 17.4.1997 / 12:50:23 / cg"
 ! !
 
-
 !CharacterArray methodsFor:'special string converting'!
 
 asUnixFilenameString
@@ -8579,7 +8580,6 @@
     "
 ! !
 
-
 !CharacterArray methodsFor:'substring searching'!
 
 findRangeOfString:subString
@@ -9109,7 +9109,6 @@
     ^ aVisitor visitString:self with:aParameter
 ! !
 
-
 !CharacterArray class methodsFor:'documentation'!
 
 version