if conditional marked as error if the YAML string is double quoted

[briantist]

Describe the bug
I have an if in my workflow that looks like this:

if: "!startsWith(matrix.os, 'ubuntu-')"

The conditional is quoted because ! has meaning in YAML to change the type, so we can't start a string with that character without a way to tell the YAML parser it's a string. This works fine in the workflow.

However, it's marked as an error by this extension:

Unexpected symbol: '"'. Located at position 1 within expression: "!startsWith(matrix.os, 'ubuntu-')"

Workarounds that work

• Single quotes (NOTE double quotes can't be used inside expression apparently)
• YAML multi-line strings
• Unnecessary templating

---
# Note double single quotes internally
if: '!startsWith(matrix.os, ''ubuntu-'')'

---
if: >-
  !startsWith(matrix.os, 'ubuntu-')

---
if: ${{ !startsWith(matrix.os, 'ubuntu-') }}

Workarounds that don't work

• explicit str typing

---
if: !!str !startsWith(matrix.os, 'ubuntu-')

To Reproduce
Use a double quoted condition.

Expected behavior
No error.

Screenshots

Extension Version
v0.25.3

[passcod]

Noting that the workarounds also cause the conditional to not syntax-highlight anymore (a more minor annoyance to be sure, though).

[passcod]

Another workaround which does preserve syntax highlighting is to wrap with () instead:

-    - if: "!startsWith(github.ref, 'refs/heads/release/')"
+    - if: (!startsWith(github.ref, 'refs/heads/release/'))

[ssbarnea]

Considering the lack of comments from any maintainers I am even wondering if we should assume this extension is abandonware, last release was like 9 months ago and an error like this is nowhere to be considered as a minor.

@konradpabjan Maybe you can give this one a go, please? It is insane that this is apparently caused by not using a certified YAML parsers, as the double quotes are not expected to endup even being visible in the loaded data.