feat: Add syntax highlight file for micro (#4553)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -38,6 +38,8 @@
   icon pack extension shows a database icon for `.prql` files. (@EmmanuelBeziat)
 - [Tokei](https://github.com/XAMPPRocky/tokei), a source lines of code counter
   now has support for `.prql` files. (@vanillajonathan)
+- Add syntax highlight file for the [micro](https://micro-editor.github.io/)
+  text editor. (@vanillajonathan)
 
 **Internal changes**:
 

grammars/micro/README.md

@@ -0,0 +1,10 @@
+# Syntax highlighting for micro
+
+This is a syntax highlighting file the [micro](https://micro-editor.github.io/)
+text editor.
+
+## Installation
+
+To install place the `prql.yaml` file in:
+
+    ~/.config/micro/syntax/

grammars/micro/prql.yaml

@@ -0,0 +1,71 @@
+# PRQL syntax highlighting file for micro - https://micro-editor.github.io/
+# https://prql-lang.org/
+# https://github.com/PRQL/prql
+filetype: prql
+
+detect:
+  filename: "\\.prql$"
+
+rules:
+  - statement: "\\b(let|module)\\b"
+
+    # Types
+  - type: "\\b(u?int(8|16|32|64)?|float(32|64)|bool|text|date|time|timestamp)\\b"
+  - type.keyword: "\\b(enum)\\b"
+  - constant.bool: "\\b(true|false|null|this|that)\\b"
+
+    # Built-in functions
+  - identifier: "\\b(abs|floor|ceil|pi|exp|ln|log10|log|sqrt|degrees|radians|cos|acos|sin|asin|tan|atan|pow|round)\\b" # Math module
+  - identifier: "\\b(min|max|sum|average|stddev|all|any|concat_array|count)\\b" # Aggregate functions
+  - identifier: "\\b(lag|lead|first|last|rank|rank_dense|row_number)\\b" # Window functions
+  - identifier: "\\b(tuple_every|tuple_map|tuple_zip|_eq|_is_null)\\b" # Tuple functions
+  - identifier: "\\b(as|in|from_text)\\b" # Misc
+  - identifier: "\\b(lower|upper|ltrim|rtrim|trim|length|extract|replace|starts_with|contains|ends_with)\\b" # Text module
+  - identifier: "\\b(to_text)\\b" # Date module
+  - identifier: "\\b(read_parquet|read_csv)\\b" # File-reading functions
+
+    # Modules
+  - identifier.class: "\\b(math|text|date|prql)\\b"
+
+    # Transforms
+  - statement: "\\b(aggregate|derive|filter|from|group|join|select|sort|take|window)\\b"
+
+    # Operators
+  - symbol.operator: "([~^.:;,+*|=!\\%@]|<|>|/|-|&)"
+
+    # Brackets
+  - symbol.brackets: "(\\{|\\})"
+  - symbol.brackets: "(\\(|\\))"
+  - symbol.brackets: "(\\[|\\])"
+
+    # Numbers and strings
+  - constant.number: "\\b[0-9](_?[0-9])*(\\.([0-9](_?[0-9])*)?)?(e[0-9](_?[0-9])*)?\\b" # decimal
+  - constant.number: "\\b0b(_?[01])+\\b" # bin
+  - constant.number: "\\b0o(_?[0-7])+\\b" # oct
+  - constant.number: "\\b0x(_?[0-9a-fA-F])+\\b" # hex
+  - constant: "\\b[0-9]+(years|months|weeks|days|hours|minutes|seconds|milliseconds|microseconds)\\b"
+
+  - constant.string:
+      start: '[frs]?"'
+      end: '"'
+      skip: "\\\\."
+      rules:
+        - constant.specialChar: "\\\\[bfnrt'\\\"\\\\]"
+        - constant.specialChar: "\\\\([0-7]{3}|x[A-Fa-f0-9]{2}|u{[0-9A-Fa-f]{1,6}})"
+
+  - constant.string:
+      start: "[frs]?'"
+      end: "'"
+      skip: "\\\\."
+      rules:
+        - constant.specialChar: "\\\\."
+        - constant.specialChar: "\\\\([0-7]{3}|x[A-Fa-f0-9]{2}|u{[0-9A-Fa-f]{1,6}})"
+
+  - comment:
+      start: "#"
+      end: "$"
+      rules:
+        - todo: "(TODO|FIXME|NOTE):?"
+
+    # Decorators
+  - preproc: "@\\{([a-z]+(=[a-z0-9]+,?)?)*\\}"