fix: bug using newline separator (#418)

.github/workflows/test.yml

@@ -237,6 +237,16 @@ jobs:
           echo '${{ toJSON(steps.changed-files-forward-slash.outputs) }}'
         shell:
           bash
+      - name: Run changed-files with newline separator
+        id: changed-files-newline
+        uses: ./
+        with:
+          separator: "\n"
+      - name: Show output
+        run: |
+          echo '${{ toJSON(steps.changed-files-newline.outputs) }}'
+        shell:
+          bash
       - name: Run changed-files with pipe separator
         id: changed-files-pipe
         uses: ./
@@ -257,6 +267,18 @@ jobs:
           echo '${{ toJSON(steps.changed-files-comma.outputs) }}'
         shell:
           bash
+      - name: Run changed-files with specific files from a source file using a newline separator
+        id: changed-files-specific-newline-source-file
+        uses: ./
+        with:
+          files_from_source_file: |
+            test/changed-files-list.txt
+          separator: "\n"
+      - name: Show output
+        run: |
+          echo '${{ toJSON(steps.changed-files-specific-newline-source-file.outputs) }}'
+        shell:
+          bash
       - name: Run changed-files with specific files
         id: changed-files-specific
         uses: ./

README.md

@@ -285,6 +285,7 @@ Support this project with a :star:
 
 > NOTE: :warning:
 >
+> *   Using characters like `\n`, `%` and `\r` as separators would be [URL encoded](https://www.w3schools.com/tags/ref_urlencode.asp)
 > *   Spaces in file names can introduce bugs when using bash loops. See: [#216](https://github.com/tj-actions/changed-files/issues/216)
 > *   However, this action will handle spaces in file names, with a recommendation of using a separator to prevent hidden issues.
 >     ![Screen Shot 2021-10-23 at 9 37 34 AM](https://user-images.githubusercontent.com/17484350/138558767-b13c90bf-a1ae-4e86-9520-70a6a4624f41.png)

entrypoint.sh

@@ -2,6 +2,10 @@
 
 set -eu
 
+INPUT_SEPARATOR="${INPUT_SEPARATOR//'%'/'%25'}"
+INPUT_SEPARATOR="${INPUT_SEPARATOR//$'\n'/'%0A'}"
+INPUT_SEPARATOR="${INPUT_SEPARATOR//$'\r'/'%0D'}"
+
 function get_diff() {
   base="$1"
   sha="$2"