add tcl support (#440)

Author: mshr-h

README.md

@@ -21,6 +21,7 @@ Install it from [VS Code Marketplace](https://marketplace.visualstudio.com/items
   - Vivado UCF constraints
   - Synopsys Design Constraints
   - Verilog Filelists (dot-F files)
+  - Tcl
 - Simple Snippets
 - Linting support from:
   - Icarus Verilog - `iverilog`
@@ -321,3 +322,5 @@ You can check it by opening the **Output** pane in VS Code and choose _Verilog_
 - [ericsonj/verilog-format](https://github.com/ericsonj/verilog-format)
 - [thomasrussellmurphy/istyle-verilog-formatter](https://github.com/thomasrussellmurphy/istyle-verilog-formatter)
 - [slang C++ docs](https://sv-lang.com/)
+- [bitwisecook/vscode-tcl: Tcl for Visual Studio Code](https://github.com/bitwisecook/vscode-tcl)
+  - `configs/tcl.configuration.json` and `syntaxes/tcl.tmlanguage.json` are obtained from the repo.

configs/tcl.configuration.json

@@ -0,0 +1,75 @@
+{
+  "capabilities": {
+      "documentOnTypeFormattingProvider": {
+          "firstTriggerCharacter": "}",
+          "moreTriggerCharacter": [
+              ";",
+              ","
+          ]
+      },
+      "documentRangeFormattingProvider": "true",
+      "renameProvider": "true",
+      "documentHighlightProvider": "true",
+      "referencesProvider": "true"
+  },
+  "comments": {
+      // symbol used for single line comment. Remove this entry if your language does not support line comments
+      "lineComment": "#"
+  },
+  // symbols used as brackets
+  "brackets": [
+      [
+          "{",
+          "}"
+      ],
+      [
+          "[",
+          "]"
+      ],
+      [
+          "(",
+          ")"
+      ]
+  ],
+  // symbols that are auto closed when typing
+  "autoClosingPairs": [
+      {
+          "open": "{",
+          "close": "}"
+      },
+      {
+          "open": "[",
+          "close": "]"
+      },
+      {
+          "open": "(",
+          "close": ")"
+      },
+      {
+          "open": "\"",
+          "close": "\"",
+          "notIn": [
+              "string"
+          ]
+      }
+  ],
+  // symbols that that can be used to surround a selection
+  "surroundingPairs": [
+      [
+          "{",
+          "}"
+      ],
+      [
+          "[",
+          "]"
+      ],
+      [
+          "(",
+          ")"
+      ],
+      [
+          "\"",
+          "\""
+      ]
+  ]
+}

package.json

@@ -28,6 +28,7 @@
     "onLanguage:bsv",
     "onLanguage:vhdl",
     "onLanguage:ucf",
+    "onLanguage:tcl",
     "onLanguage:sdc",
     "onLanguage:xdc",
     "onLanguage:verilog-filelist"
@@ -108,6 +109,19 @@
         ],
         "configuration": "./configs/sdc.configuration.json"
       },
+      {
+        "id": "tcl",
+        "aliases": [
+            "Tcl",
+            "tcl"
+        ],
+        "extensions": [
+            ".tcl",
+            "tm",
+            "tk"
+        ],
+        "configuration": "./configs/tcl.configuration.json"
+      },
       {
         "id": "xdc",
         "aliases": [
@@ -161,6 +175,11 @@
         "scopeName": "source.sdc",
         "path": "./syntaxes/sdc.tmLanguage.json"
       },
+      {
+        "language": "tcl",
+        "scopeName": "source.tcl",
+        "path": "./syntaxes/tcl.tmlanguage.json"
+      },
       {
         "language": "xdc",
         "scopeName": "source.sdc",