diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..c6f7cc1
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,23 @@
+# Changelog
+
+## Todo
+
+- [ ] Tests on different platforms (e.g. busybox)
+
+## [0.2](https://winklerfamilie.eu/git/efelon/rdlink/releases/tag/v0.2) - 2022-03-22
+
+* Fix pattern substitution bugs (found with bash 3.2.57)
+* Test successful on
+  * Ubuntu x86_64 (Ubuntu 20.04.4 LTS)  
+    **GNU bash, version 3.2.57**
+
+## [0.1](https://winklerfamilie.eu/git/efelon/rdlink/releases/tag/v0.1) - 2022-03-22
+
+* First relase
+* behavior for normal cases same as readlink -f
+* Tests successful on
+  * Raspberry Pi OS aarch64/arm64 (Debian GNU/Linux 11 (bullseye))  
+    **GNU bash, version 5.1.4**
+  * Ubuntu x86_64 (Ubuntu 20.04.4 LTS)  
+    **GNU bash, Version 5.0.17**
+
diff --git a/rdlink.sh b/rdlink.sh
index a51b6ed..7c85dbf 100755
--- a/rdlink.sh
+++ b/rdlink.sh
@@ -169,7 +169,7 @@ rl::cleanpath() {
 
   # Remove multiple /
   while [[ "${work:-}" = *"//"* ]]; do
-    work="${work//'//'/'/'}"
+    work="${work/\/\///}"
   done
 
   info "  rl::cleanpath result: ${work}"
@@ -191,7 +191,7 @@ rl::normalize() {
   # Remove /./ and /.$ sequences.
   rex_tmp='/\.(/|$)'
   while [[ "$work" =~ $rex_tmp ]]; do
-    work="${work/"${BASH_REMATCH[0]}"/"${BASH_REMATCH[1]/$//}"}"
+    work="${work/${BASH_REMATCH[0]}/${BASH_REMATCH[1]/$//}}"
   done
 
   # Remove leading ./
diff --git a/test/test_rdlink.sh b/test/test_rdlink.sh
index e9c059a..8005157 100755
--- a/test/test_rdlink.sh
+++ b/test/test_rdlink.sh
@@ -47,7 +47,7 @@ rl::printPath() {
   local inputwidth=${config_path_width}
 
   if (( flag_extendedOutput )); then
-    printf -- "%-3d Inp: %-${config_path_width}s ---" ${testnum} "${input}"
+    printf -- "%-5d Inp: %-${config_path_width}s ---" ${testnum} "${input}"
   else
     # Truncate input string on the left if longer than $config_path_width
     if (( ${#input} > ${config_path_width} )) ; then
@@ -97,7 +97,7 @@ rl::testcmp() {
     printf " %b\n" "${testresult_graphic}"
     if (( ! testresult )); then
       # Test failed
-      printf " Result: %s\n    Exp: %s\n" "${actual}" "${expect}" 
+      printf "   Result: %s\n      Exp: %s\n" "${actual}" "${expect}" 
 
       if (( flag_verbose )); then
         [ -e "${input}" ] && printf "\n Subject:\n" && ls -al "${input}"