fi-0004: Invalid hex digit {:#fi-0004}

Unicode escapes in string literals must not contain invalid hex digits:

{% include “docs/reference/fidl/language/error-catalog/label/_bad.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0004.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

You must specify a valid Unicode code point in hexadecimal, from 0 to 10FFFF. Each hex digit must be a number from 0 to 9, a lowercase letter from a to f, or an uppercase letter from A to F. In this case, G was a typo for F:

{% include “docs/reference/fidl/language/error-catalog/label/_good.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0004.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}