allow multiline patterns

Author: LuisLiraC

README.md

@@ -18,6 +18,17 @@ Examples:
 - `src/**/*`: All files within the `src` directory and its subdirectories
 - `!README.md`: Exclude the README.md file
 
+Patterns could be a single line or multiline string.
+```yaml
+patterns: |
+  *.rs
+  src/**/*
+  !README.md
+```
+```yaml
+patterns: '*.rs,src/**/*,!README.md'
+```
+
 ## Outputs
 
 ### `DIFF_FILES`
@@ -56,4 +67,4 @@ jobs:
 ```
 
 > [!WARNING]
-> At this moment it only works with the `pull_request` event. It uses the `GITHUB_BASE_REF` environment variable to get the base branch of the PR and this environment variable is only available in the `pull_request` event.
+> At this moment it only works with the `pull_request` event. It uses the `GITHUB_BASE_REF` environment variable to get the base branch of the PR and this it is only available in the `pull_request` event.

action.yaml

@@ -18,13 +18,14 @@ runs:
       shell: bash
       run: |
         BIN_URL=$(curl https://api.github.com/repos/LuisLiraC/git-diff/releases/latest | jq -r '.assets[0].browser_download_url')
-        echo "Downloading from $BIN_URL"
-        curl -L $BIN_URL -o rust-binary.tgz
+        curl -s -L $BIN_URL -o rust-binary.tgz
         tar -xzvf rust-binary.tgz
         mv ./Linux/git-diff ./git-diff
 
     - name: Run git-diff
       id: get-git-diff
       shell: bash
       run: |
-          ./git-diff --patterns='${{ inputs.patterns }}'
+          PATTERNS="${{ inputs.patterns }}"
+          COMMA_SEPARATED_PATTERNS=$(echo "$PATTERNS" | tr '\n' ',' | sed -e 's/,$//' | sed 's/,$//' | sed 's/ //g')
+          ./git-diff --patterns='$COMMA_SEPARATED_PATTERNS'