feat: Add basic psqlrc syntax highlighting

Author: hyperupcall

language-configuration/psqlrc.language-configuration.json

@@ -0,0 +1,5 @@
+{
+	"comments": {
+		"lineComment": "--"
+	}
+}

package.json

@@ -336,6 +336,7 @@
 					"ignore"
 				],
 				"extensions": [
+					".agignore",
 					".mignore",
 					".cvsignore",
 					".chefignore",
@@ -590,6 +591,16 @@
 					"Protocol Buffers"
 				]
 			},
+			{
+				"id": "psqlrc",
+				"extensions": [
+					".psqlrc"
+				],
+				"filenames": [
+					"psqlrc.conf"
+				],
+				"configuration": "./language-configuration/psqlrc.language-configuration.json"
+			},
 			{
 				"id": "pbxproj",
 				"aliases": [
@@ -1111,6 +1122,11 @@
 				"scopeName": "source.proto",
 				"path": "./syntaxes/proto3.tmLanguage.json"
 			},
+			{
+				"language": "psqlrc",
+				"scopeName": "source.psqlrc",
+				"path": "./syntaxes/psqlrc.tmLanguage.json"
+			},
 			{
 				"scopeName": "markdown.codeblock.proto",
 				"path": "./syntaxes/proto3.codeblock.tmLanguage.json",

syntaxes/digrc.tmLanguage.json

@@ -5,9 +5,6 @@
 	"patterns": [
 		{
 			"include": "#comment"
-		},
-		{
-			"include": "#option"
 		}
 	],
 	"repository": {

syntaxes/psqlrc.tmLanguage.json

@@ -0,0 +1,21 @@
+{
+	"$schema": "https://json.schemastore.org/tmLanguage.json",
+	"name": "psqlrc",
+	"scopeName": "source.psqlrc",
+	"patterns": [
+		{
+			"include": "#comment"
+		}
+	],
+	"repository": {
+		"comment": {
+			"patterns": [
+				{
+					"name": "comment.line.number-sign",
+					"begin": "^\\s*--.*",
+					"end": "\\n"
+				}
+			]
+		}
+	}
+}

testdata/1.psqlrc

@@ -0,0 +1,8 @@
+\set COMP_KEYWORD_CASE upper
+
+\x auto
+
+\pset null '[null]'
+
+-- Display timings
+\timing