Ensure all code blocks are labeled and spaced

.markdownlint.yaml

@@ -0,0 +1,16 @@
+default: true
+MD001: false
+MD004: false
+MD007: false
+MD012: false
+MD013: false
+MD022: false
+MD024: false
+MD030: false
+MD032: false
+MD033: false
+MD038: false
+MD046: false
+MD049: false
+MD053: false
+MD059: false

.pre-commit-config.yaml

@@ -1,23 +1,28 @@
 repos:
--   repo: https://github.com/pre-commit/pre-commit-hooks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0
     hooks:
-    -   id: check-added-large-files
-    -   id: check-case-conflict
-    -   id: check-executables-have-shebangs
-    -   id: check-json
-    -   id: check-merge-conflict
-    -   id: check-shebang-scripts-are-executable
-    -   id: check-symlinks
-    -   id: check-vcs-permalinks
-    -   id: check-yaml
-    -   id: destroyed-symlinks
-    -   id: detect-private-key
-    -   id: fix-byte-order-marker
-    -   id: file-contents-sorter
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-json
+      - id: check-merge-conflict
+      - id: check-shebang-scripts-are-executable
+      - id: check-symlinks
+      - id: check-vcs-permalinks
+      - id: check-yaml
+      - id: destroyed-symlinks
+      - id: detect-private-key
+      - id: fix-byte-order-marker
+      - id: file-contents-sorter
         args: [--unique]
         files: '\.epubcheck\.tsv|\.htmlvalidateignore'
-    -   id: forbid-new-submodules
-    -   id: end-of-file-fixer
-    -   id: mixed-line-ending
-    -   id: trailing-whitespace
+      - id: forbid-new-submodules
+      - id: end-of-file-fixer
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+  - repo: https://github.com/igorshubovych/markdownlint-cli
+    rev: v0.47.0
+    hooks:
+      - id: markdownlint
+        files: 'src/.*\.md'

courses/TSPL/2019/Assignment1.lagda.md

@@ -3,7 +3,7 @@ title     : "Assignment1: TSPL Assignment 1"
 permalink : /TSPL/2019/Assignment1/
 ---
 
-```
+```agda
 module Assignment1 where
 ```
 
@@ -19,9 +19,11 @@ You don't need to do all of these, but should attempt at least a few.
 Exercises labelled "(practice)" are included for those who want extra practice.
 
 Submit your homework using the "submit" command.
+
 ```bash
 submit tspl cw1 Assignment1.lagda.md
 ```
+
 Please ensure your files execute correctly under Agda!
 
 
@@ -43,7 +45,7 @@ yourself, or your group in the case of group practicals).
 
 ## Imports
 
-```
+```agda
 import Relation.Binary.PropositionalEquality as Eq
 open Eq using (_≡_; refl; cong; sym)
 open Eq.≡-Reasoning using (begin_; _≡⟨⟩_; step-≡; _∎)
@@ -89,12 +91,14 @@ Compute `5 ∸ 3` and `3 ∸ 5`, writing out your reasoning as a chain of equati
 
 A more efficient representation of natural numbers uses a binary
 rather than a unary system.  We represent a number as a bitstring.
-```
+
+```agda
 data Bin : Set where
   nil : Bin
   x0_ : Bin → Bin
   x1_ : Bin → Bin
 ```
+
 For instance, the bitstring
 
     1011