port legacy tokenizer to new postcode handling

[nominatim.git] / docs / develop / Tokenizers.md

diff --git a/docs/develop/Tokenizers.md b/docs/develop/Tokenizers.md
index 2b4da005090ab28ec4f6c41215d32f3dc5c87ace..5fe4e38d436b2978ce334a258fdaa80c3a9a9e58 100644 (file)
--- a/docs/develop/Tokenizers.md
+++ b/docs/develop/Tokenizers.md
@@ -245,11 +245,11 @@ Currently, tokenizers are encouraged to make sure that matching works against
 both the search token list and the match token list.
 
 ```sql
-FUNCTION token_normalized_postcode(postcode TEXT) RETURNS TEXT
+FUNCTION token_get_postcode(info JSONB) RETURNS TEXT
 ```
 
-Return the normalized version of the given postcode. This function must return
-the same value as the Python function `AbstractAnalyzer->normalize_postcode()`.
+Return the postcode for the object, if any exists. The postcode must be in
+the form that should also be presented to the end-user.
 
 ```sql
 FUNCTION token_strip_info(info JSONB) RETURNS JSONB