fix: drop support for 3.2

Author: king-p3nguin

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
   test:
     strategy:
       matrix:
-        version: ['3.2', '4.0', '4.1', '4.2', '4.3', '4.4', '5.0', '5.1', 'latest']
+        version: ['4.0', '4.1', '4.2', '4.3', '4.4', '5.0', '5.1', 'latest']
       fail-fast: false
     runs-on: ubuntu-latest
     steps:

CHANGELOG.md

@@ -5,7 +5,7 @@
 ### Fixed
 
 - Fix encoding numbers with leading zeros throws an error. (#6)
-- Works with bash version 3.2 or higher (#7)
+- Works with bash version 4.0 or higher (#7)
 
 ## [1.0.0] - 2024-01-28
 

README.md

@@ -31,12 +31,18 @@ Not good for:
 
 ## 🚀 Getting started
 
+If your bash version is not 4.0 or higher, please upgrade your bash. (You can check with `$bash --version`.)
+
+Once you have verified the version of bash, run
+
 ```bash
 git clone https://github.com/sqids/sqids-bash.git
 chmod +x sqids-bash/src/sqids
 cp sqids-bash/src/sqids /usr/local/bin
 ```
 
+You may need to add `sudo` before the command to run the commands as root.
+
 ## 👩‍💻 Examples
 
 Simple encode & decode:

src/sqids

@@ -603,8 +603,7 @@ joinchars() {
 
 # usage: lower "AbCdE" -> "abcde"
 lower() {
-    __RETURN=$(echo "$1" | tr '[:upper:]' '[:lower:]')
-    # __RETURN="${1,,}" # does not work with bash 3.2
+    __RETURN="${1,,}"
 }
 
 # usage: shuffle "abcdefg" -> "bcefgad"