handle comments for multi-line inputs

README.md

@@ -359,7 +359,7 @@ tags: |
 
 Will be used on [schedule event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#schedule).
 
-`pattern` is a specially crafted attribute to support [Handlebars template](https://handlebarsjs.com/guide/) with
+`pattern` is a specially crafted attribute to support [Handlebars' template](https://handlebarsjs.com/guide/) with
 the following expressions:
 * `date 'format'` ; render date by its [moment format](https://momentjs.com/docs/#/displaying/format/)
 
@@ -478,7 +478,7 @@ tags: |
 ```
 
 Can create a regular expression for matching Git tag with a pattern and capturing group. Will be used on a
-[push tag event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push) but you can also use
+[push tag event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push) but, you can also use
 a custom value through `value` attribute.
 
 | Git tag                 | Pattern                       | Group   | Output                 |
@@ -615,7 +615,7 @@ tags: |
 
 ### Global expressions
 
-The following [Handlebars template](https://handlebarsjs.com/guide/) expressions for `prefix`, `suffix` and `value`
+The following [Handlebars' template](https://handlebarsjs.com/guide/) expressions for `prefix`, `suffix` and `value`
 attributes are available:
 
 | Expression               | Output               |
@@ -679,7 +679,7 @@ workflow using the [`fromJSON` function](https://docs.github.com/en/actions/lear
 
 ### Overwrite labels
 
-If some of the [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/master/annotations.md)
+If some [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/master/annotations.md)
 labels generated are not suitable, you can overwrite them like this:
 
 ```yaml

__tests__/context.test.ts

@@ -15,55 +15,61 @@ jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
 describe('getInputList', () => {
   it('single line correctly', async () => {
     await setInput('foo', 'bar');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar']);
   });
 
   it('multiline correctly', async () => {
     setInput('foo', 'bar\nbaz');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz']);
   });
 
   it('empty lines correctly', async () => {
     setInput('foo', 'bar\n\nbaz');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz']);
   });
 
+  it('comment correctly', async () => {
+    setInput('foo', 'bar\n#com\n"#taken"\nhello#comment\nbaz');
+    const res = context.getInputList('foo');
+    expect(res).toEqual(['bar', '#taken', 'hello', 'baz']);
+  });
+
   it('comma correctly', async () => {
     setInput('foo', 'bar,baz');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz']);
   });
 
   it('empty result correctly', async () => {
     setInput('foo', 'bar,baz,');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz']);
   });
 
   it('different new lines correctly', async () => {
     setInput('foo', 'bar\r\nbaz');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz']);
   });
 
   it('different new lines and comma correctly', async () => {
     setInput('foo', 'bar\r\nbaz,bat');
-    const res = await context.getInputList('foo');
+    const res = context.getInputList('foo');
     expect(res).toEqual(['bar', 'baz', 'bat']);
   });
 
   it('multiline and ignoring comma correctly', async () => {
     setInput('cache-from', 'user/app:cache\ntype=local,src=path/to/dir');
-    const res = await context.getInputList('cache-from', true);
+    const res = context.getInputList('cache-from', true);
     expect(res).toEqual(['user/app:cache', 'type=local,src=path/to/dir']);
   });
 
   it('different new lines and ignoring comma correctly', async () => {
     setInput('cache-from', 'user/app:cache\r\ntype=local,src=path/to/dir');
-    const res = await context.getInputList('cache-from', true);
+    const res = context.getInputList('cache-from', true);
     expect(res).toEqual(['user/app:cache', 'type=local,src=path/to/dir']);
   });
 
@@ -76,7 +82,7 @@ bbbbbbb
 ccccccccc"
 FOO=bar`
     );
-    const res = await context.getInputList('secrets', true);
+    const res = context.getInputList('secrets', true);
     expect(res).toEqual([
       'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
       `MYSECRET=aaaaaaaa
@@ -99,7 +105,7 @@ FOO=bar
 bbbb
 ccc"`
     );
-    const res = await context.getInputList('secrets', true);
+    const res = context.getInputList('secrets', true);
     expect(res).toEqual([
       'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
       `MYSECRET=aaaaaaaa
@@ -122,7 +128,7 @@ bbbbbbb
 ccccccccc
 FOO=bar`
     );
-    const res = await context.getInputList('secrets', true);
+    const res = context.getInputList('secrets', true);
     expect(res).toEqual(['GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789', 'MYSECRET=aaaaaaaa', 'bbbbbbb', 'ccccccccc', 'FOO=bar']);
   });
 
@@ -135,7 +141,7 @@ bbbb""bbb
 ccccccccc"
 FOO=bar`
     );
-    const res = await context.getInputList('secrets', true);
+    const res = context.getInputList('secrets', true);
     expect(res).toEqual([
       'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
       `MYSECRET=aaaaaaaa

src/context.ts

@@ -49,6 +49,7 @@ export function getInputList(name: string, ignoreComma?: boolean): string[] {
   for (let output of csvparse(items, {
     columns: false,
     relax: true,
+    comment: '#',
     relaxColumnCount: true,
     skipLinesWithEmptyValues: true
   }) as Array<string[]>) {