fix: add extended descriptions for lindel, shellfs and crypto.

extensions/crypto/description.yml

@@ -12,3 +12,10 @@ extension:
 repo:
   github: rustyconover/duckdb-crypto-extension
   ref: b6ccda3451d4fac8a2c0ae5ab2bca5216f22424c
+
+docs:
+  hello_world: |
+    SELECT * from read_csv('seq 1 100 | grep 2 |');
+  extended_description: |
+    This extension, `crypto`, adds cryptographic hash functions and
+    the ability to calculate a HMAC to DuckDB's SQL engine.

extensions/crypto/docs/function_descriptions.csv

@@ -0,0 +1,3 @@
+function,description,comment,example
+crypto_hash,"Calculate the value of a hash function","","select crypto_hash('md5', 'test');"
+crypto_hmac,"Calculate a HMAC value","","select crypto_hmac('sha2-256', 'secret key', 'secret message');"

extensions/lindel/description.yml

@@ -11,3 +11,11 @@ extension:
 repo:
   github: rustyconover/duckdb-lindel-extension
   ref: 76f5bc78e8bfd1a7953c8cc4c284209b65626216
+
+docs:
+  hello_world: |
+    SELECT hilbert_encode([1, 2, 3]::tinyint[3]);
+  extended_description: |
+    This `lindel` extension adds functions for the linearization and
+    delinearization of numeric arrays in DuckDB. It allows you to order
+    multi-dimensional data using space-filling curves.

extensions/lindel/docs/function_descriptions.csv

@@ -0,0 +1,5 @@
+function,description,comment,example
+hilbert_encode,"Encode an array of values using the Hilbert space filling curve","","select hilbert_encode([43, 3]::integer[2]);"
+hilbert_decode,"Decode a Hilbert encoded set of values","","select hilbert_decode(7::uint16, 2, false, true) as values;"
+morton_encode,"Encode an array of values using Morton encoding","","select morton_encode([43, 3]::integer[2]);"
+morton_decode,"Decode an array of values using Morton encoding","","select morton_decode(7::uint16, 2, false, true) as values;"

extensions/shellfs/description.yml

@@ -12,3 +12,12 @@ extension:
 repo:
   github: rustyconover/duckdb-shellfs-extension
   ref: d01c73d211544f5f0ff62acb8263a9874f973ddd
+
+docs:
+  hello_world: |
+    SELECT * from read_csv('seq 1 100 | grep 2 |');
+  extended_description: |
+    The `shellfs`` extension for DuckDB enables the use of Unix pipes for input and output.
+    By appending a pipe character `|`` to a filename, DuckDB will treat it as a series of commands
+    to execute and capture the output. Conversely, if you prefix a filename with `|`, DuckDB will
+    treat it as an output pipe.