From 58a40597c255495672f68771fa58c7a06191cd8a Mon Sep 17 00:00:00 2001
From: Russ Schaaf <russ.schaaf@gmail.com>
Date: Sat, 31 Aug 2024 14:22:41 -0700
Subject: [PATCH] Added github-workflow-actions as a YAML variant

---
 package.json                                  |   40 +
 .../github-actions-workflow.code-snippets     |  374 ++++++
 ...-actions-workflow.embedded.tmLanguage.json | 1103 +++++++++++++++++
 utilities/syntax_assembler.js                 |    9 +
 utilities/syntax_templates/yaml_syntax.js     |    2 +-
 5 files changed, 1527 insertions(+), 1 deletion(-)
 create mode 100644 snippets/github-actions-workflow.code-snippets
 create mode 100644 syntaxes/github-actions-workflow.embedded.tmLanguage.json

diff --git a/package.json b/package.json
index 7695a0b..c26671b 100644
--- a/package.json
+++ b/package.json
@@ -232,6 +232,46 @@
           "meta.embedded.block.Markdown.yaml": "Markdown"
         }
       },
+      {
+        "scopeName": "source.yaml.embedded.codeblock",
+        "injectTo": [
+          "source.github-actions-workflow"
+        ],
+        "path": "syntaxes/github-actions-workflow.embedded.tmLanguage.json",
+        "embeddedLanguages": {
+          "meta.embedded.block.bat.github-actions-workflow": "bat",
+          "meta.embedded.block.cpp.github-actions-workflow": "cpp",
+          "meta.embedded.block.css.github-actions-workflow": "css",
+          "meta.embedded.block.html.github-actions-workflow": "html",
+          "meta.embedded.block.ini.github-actions-workflow": "ini",
+          "meta.embedded.block.javascript.github-actions-workflow": "javascript",
+          "meta.embedded.block.json.github-actions-workflow": "json",
+          "meta.embedded.block.jsonc.github-actions-workflow": "jsonc",
+          "meta.embedded.block.python.github-actions-workflow": "python",
+          "meta.embedded.block.shellscript.github-actions-workflow": "shellscript",
+          "meta.embedded.block.sql.github-actions-workflow": "sql",
+          "meta.embedded.block.toml.github-actions-workflow": "toml",
+          "meta.embedded.block.xml.github-actions-workflow": "xml",
+          "meta.embedded.block.yaml.github-actions-workflow": "yaml",
+          "meta.embedded.block.c.github-actions-workflow": "c",
+          "meta.embedded.block.hlsl.github-actions-workflow": "hlsl",
+          "meta.embedded.block.glsl.github-actions-workflow": "glsl",
+          "meta.embedded.block.metal.github-actions-workflow": "metal",
+          "meta.embedded.block.wgsl.github-actions-workflow": "wgsl",
+          "meta.embedded.block.lua.github-actions-workflow": "lua",
+          "meta.embedded.block.makefile.github-actions-workflow": "makefile",
+          "meta.embedded.block.graphql.github-actions-workflow": "graphql",
+          "meta.embedded.block.typescript.github-actions-workflow": "typescript",
+          "meta.embedded.block.latex.github-actions-workflow": "latex",
+          "meta.embedded.block.tex.github-actions-workflow": "tex",
+          "meta.embedded.block.dot.github-actions-workflow": "dot",
+          "meta.embedded.block.arm.github-actions-workflow": "arm",
+          "meta.embedded.block.asm-intel-x86-generic.github-actions-workflow": "asm-intel-x86-generic",
+          "meta.embedded.block.handlebars.github-actions-workflow": "handlebars",
+          "meta.embedded.block.powershell.github-actions-workflow": "powershell",
+          "meta.embedded.block.Markdown.github-actions-workflow": "Markdown"
+        }
+      },
       {
         "scopeName": "source.js.embedded.codeblock",
         "injectTo": [
diff --git a/snippets/github-actions-workflow.code-snippets b/snippets/github-actions-workflow.code-snippets
new file mode 100644
index 0000000..fad8a37
--- /dev/null
+++ b/snippets/github-actions-workflow.code-snippets
@@ -0,0 +1,374 @@
+{
+  "Batch code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "bat"
+    ],
+    "description": "Insert a Batch code block string",
+    "body": [
+      "| #bat",
+      "\t$0",
+      ""
+    ]
+  },
+  "C++ code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "cpp"
+    ],
+    "description": "Insert a C++ code block string",
+    "body": [
+      "| #cpp",
+      "\t$0",
+      ""
+    ]
+  },
+  "CSS code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "css"
+    ],
+    "description": "Insert a CSS code block string",
+    "body": [
+      "| #css",
+      "\t$0",
+      ""
+    ]
+  },
+  "HTML code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "html"
+    ],
+    "description": "Insert a HTML code block string",
+    "body": [
+      "| #html",
+      "\t$0",
+      ""
+    ]
+  },
+  "INI code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "ini"
+    ],
+    "description": "Insert a INI code block string",
+    "body": [
+      "| #ini",
+      "\t$0",
+      ""
+    ]
+  },
+  "Javascript code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "js"
+    ],
+    "description": "Insert a Javascript code block string",
+    "body": [
+      "| #js",
+      "\t$0",
+      ""
+    ]
+  },
+  "JSON code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "json"
+    ],
+    "description": "Insert a JSON code block string",
+    "body": [
+      "| #json",
+      "\t$0",
+      ""
+    ]
+  },
+  "JSONC code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "jsonc"
+    ],
+    "description": "Insert a JSONC code block string",
+    "body": [
+      "| #jsonc",
+      "\t$0",
+      ""
+    ]
+  },
+  "Python code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "py"
+    ],
+    "description": "Insert a Python code block string",
+    "body": [
+      "| #py",
+      "\t$0",
+      ""
+    ]
+  },
+  "Shell code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "sh"
+    ],
+    "description": "Insert a Shell code block string",
+    "body": [
+      "| #sh",
+      "\t$0",
+      ""
+    ]
+  },
+  "SQL code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "sql"
+    ],
+    "description": "Insert a SQL code block string",
+    "body": [
+      "| #sql",
+      "\t$0",
+      ""
+    ]
+  },
+  "TOML code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "toml"
+    ],
+    "description": "Insert a TOML code block string",
+    "body": [
+      "| #toml",
+      "\t$0",
+      ""
+    ]
+  },
+  "XML code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "xml"
+    ],
+    "description": "Insert a XML code block string",
+    "body": [
+      "| #xml",
+      "\t$0",
+      ""
+    ]
+  },
+  "YAML code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "yaml"
+    ],
+    "description": "Insert a YAML code block string",
+    "body": [
+      "| #yaml",
+      "\t$0",
+      ""
+    ]
+  },
+  "C code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "c"
+    ],
+    "description": "Insert a C code block string",
+    "body": [
+      "| #c",
+      "\t$0",
+      ""
+    ]
+  },
+  "HLSL code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "hlsl"
+    ],
+    "description": "Insert a HLSL code block string",
+    "body": [
+      "| #hlsl",
+      "\t$0",
+      ""
+    ]
+  },
+  "GLSL code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "glsl"
+    ],
+    "description": "Insert a GLSL code block string",
+    "body": [
+      "| #glsl",
+      "\t$0",
+      ""
+    ]
+  },
+  "Metal code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "metal"
+    ],
+    "description": "Insert a Metal code block string",
+    "body": [
+      "| #metal",
+      "\t$0",
+      ""
+    ]
+  },
+  "WGSL code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "wgsl"
+    ],
+    "description": "Insert a WGSL code block string",
+    "body": [
+      "| #wgsl",
+      "\t$0",
+      ""
+    ]
+  },
+  "Lua code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "lua"
+    ],
+    "description": "Insert a Lua code block string",
+    "body": [
+      "| #lua",
+      "\t$0",
+      ""
+    ]
+  },
+  "Makefile code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "make"
+    ],
+    "description": "Insert a Makefile code block string",
+    "body": [
+      "| #make",
+      "\t$0",
+      ""
+    ]
+  },
+  "GraphQL code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "graphql"
+    ],
+    "description": "Insert a GraphQL code block string",
+    "body": [
+      "| #graphql",
+      "\t$0",
+      ""
+    ]
+  },
+  "TypeScript code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "typescript"
+    ],
+    "description": "Insert a TypeScript code block string",
+    "body": [
+      "| #typescript",
+      "\t$0",
+      ""
+    ]
+  },
+  "LaTeX code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "latex"
+    ],
+    "description": "Insert a LaTeX code block string",
+    "body": [
+      "| #latex",
+      "\t$0",
+      ""
+    ]
+  },
+  "TeX code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "tex"
+    ],
+    "description": "Insert a TeX code block string",
+    "body": [
+      "| #tex",
+      "\t$0",
+      ""
+    ]
+  },
+  "Graphviz code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "graphviz"
+    ],
+    "description": "Insert a Graphviz code block string",
+    "body": [
+      "| #graphviz",
+      "\t$0",
+      ""
+    ]
+  },
+  "ARM Assembly code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "arm"
+    ],
+    "description": "Insert a ARM Assembly code block string",
+    "body": [
+      "| #arm",
+      "\t$0",
+      ""
+    ]
+  },
+  "x86 / x64 Assembly code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "x86"
+    ],
+    "description": "Insert a x86 / x64 Assembly code block string",
+    "body": [
+      "| #x86",
+      "\t$0",
+      ""
+    ]
+  },
+  "Handlebars code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "hbs"
+    ],
+    "description": "Insert a Handlebars code block string",
+    "body": [
+      "| #hbs",
+      "\t$0",
+      ""
+    ]
+  },
+  "PowerShell code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "ps1"
+    ],
+    "description": "Insert a PowerShell code block string",
+    "body": [
+      "| #ps1",
+      "\t$0",
+      ""
+    ]
+  },
+  "Markdown code block (string)": {
+    "scope": "github-actions-workflow",
+    "prefix": [
+      "md"
+    ],
+    "description": "Insert a Markdown code block string",
+    "body": [
+      "| #md",
+      "\t$0",
+      ""
+    ]
+  }
+}
\ No newline at end of file
diff --git a/syntaxes/github-actions-workflow.embedded.tmLanguage.json b/syntaxes/github-actions-workflow.embedded.tmLanguage.json
new file mode 100644
index 0000000..2620e42
--- /dev/null
+++ b/syntaxes/github-actions-workflow.embedded.tmLanguage.json
@@ -0,0 +1,1103 @@
+{
+  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
+  "comment": "This file has been automatically generated by syntax_assembler.js\nDO NOT HAND EDIT IT - changes will be lost.",
+  "injectionSelector": "L:source.github-actions-workflow -string -comment",
+  "scopeName": "source.yaml.embedded.codeblock",
+  "patterns": [
+    {
+      "include": "#block-scalar-with-embedding"
+    }
+  ],
+  "repository": {
+    "block-scalar-with-embedding": {
+      "comment": "These patterns all match YAML block scalar strings and select one language.The syntax is injected into https://github.com/microsoft/vscode/blob/main/extensions/yaml/syntaxes/yaml.tmLanguage.json",
+      "patterns": [
+        {
+          "comment": "Batch-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:bat) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.batchfile"
+                }
+              ],
+              "name": "meta.embedded.block.bat.github-actions-workflow source.batchfile"
+            }
+          ]
+        },
+        {
+          "comment": "C++-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:cpp|c\\+\\+) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.cpp"
+                }
+              ],
+              "name": "meta.embedded.block.cpp.github-actions-workflow source.cpp"
+            }
+          ]
+        },
+        {
+          "comment": "CSS-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:css) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.css"
+                }
+              ],
+              "name": "meta.embedded.block.css.github-actions-workflow source.css"
+            }
+          ]
+        },
+        {
+          "comment": "HTML-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:html) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "text.html.derivative"
+                }
+              ],
+              "name": "meta.embedded.block.html.github-actions-workflow text.html.derivative"
+            }
+          ]
+        },
+        {
+          "comment": "INI-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:ini) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.ini"
+                }
+              ],
+              "name": "meta.embedded.block.ini.github-actions-workflow source.ini"
+            }
+          ]
+        },
+        {
+          "comment": "Javascript-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:js|javascript) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.js"
+                }
+              ],
+              "name": "meta.embedded.block.javascript.github-actions-workflow source.js"
+            }
+          ]
+        },
+        {
+          "comment": "JSON-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:json) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.json"
+                }
+              ],
+              "name": "meta.embedded.block.json.github-actions-workflow source.json"
+            }
+          ]
+        },
+        {
+          "comment": "JSONC-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:jsonc) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
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+          "comment": "x86 / x64 Assembly-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:x86|x86_64|x64) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.asm.x86_64"
+                }
+              ],
+              "name": "meta.embedded.block.asm-intel-x86-generic.github-actions-workflow source.asm.x86_64"
+            }
+          ]
+        },
+        {
+          "comment": "Handlebars-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:hbs|handlebars) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "text.html.handlebars"
+                }
+              ],
+              "name": "meta.embedded.block.handlebars.github-actions-workflow text.html.handlebars"
+            }
+          ]
+        },
+        {
+          "comment": "PowerShell-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:ps1|powershell) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "source.powershell"
+                }
+              ],
+              "name": "meta.embedded.block.powershell.github-actions-workflow source.powershell"
+            }
+          ]
+        },
+        {
+          "comment": "Markdown-formatted block scalar strings",
+          "name": "string.quoted.multi.embedded.yaml",
+          "begin": "(?x)\n(?:(\\|)|(>)) ([1-9])? ([-+])? \\s* \n( \\# (?i:md|markdown) ) \\b \\s* \\n?",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.control.flow.block-scalar.literal.yaml"
+            },
+            "2": {
+              "name": "keyword.control.flow.block-scalar.folded.yaml"
+            },
+            "3": {
+              "name": "constant.numeric.indentation-indicator.yaml"
+            },
+            "4": {
+              "name": "storage.modifier.chomping-indicator.yaml"
+            },
+            "5": {
+              "name": "meta.encoding.yaml"
+            }
+          },
+          "end": "^(?=\\S)|(?!\\G)",
+          "patterns": [
+            {
+              "begin": "^([ ]+)(?! )",
+              "end": "^(?!\\1|\\s*$)",
+              "patterns": [
+                {
+                  "include": "text.html.markdown"
+                }
+              ],
+              "name": "meta.embedded.block.Markdown.github-actions-workflow text.html.markdown"
+            }
+          ]
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/utilities/syntax_assembler.js b/utilities/syntax_assembler.js
index 663935c..0d52232 100755
--- a/utilities/syntax_assembler.js
+++ b/utilities/syntax_assembler.js
@@ -83,6 +83,15 @@ const HOST_LANGUAGE_SPECS = [
         snippet_start: '| #<ID>',
         snippet_end: '',
     },
+    {
+        file: 'github-actions-workflow.embedded.tmLanguage.json',
+        root_scopes: ['source.github-actions-workflow'],
+        syntax_builder: buildYamlSyntax,
+        vsname: 'github-actions-workflow',
+        embedded_scope: 'source.yaml.embedded.codeblock',
+        snippet_start: '| #<ID>',
+        snippet_end: '',
+    },
     {
         file: 'javascript.embedded.tmLanguage.json',
         root_scopes: ['source.js'],
diff --git a/utilities/syntax_templates/yaml_syntax.js b/utilities/syntax_templates/yaml_syntax.js
index 0ddfe6b..fb5122a 100644
--- a/utilities/syntax_templates/yaml_syntax.js
+++ b/utilities/syntax_templates/yaml_syntax.js
@@ -40,7 +40,7 @@ export function buildYamlSyntax(hostSpec, embeddedSpecs) {
         '$schema': 'https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json',
         'comment': `This file has been automatically generated by syntax_assembler.js
 DO NOT HAND EDIT IT - changes will be lost.`,
-        'injectionSelector': 'L:source.yaml -string -comment, L:text.yaml.jinja -string -comment',
+        'injectionSelector': hostSpec.root_scopes.map((scope) => `L:${scope} -string -comment`).join(', '),
         'scopeName': hostSpec.embedded_scope,
         'patterns': [{ 'include': '#block-scalar-with-embedding' }],
         'repository': {