Fix escape_except_blockquotes for greater than 9 block quotes in 1 string (#317)

* Fix escape_except_blockquotes for greater than 9 block quotes in 1 string

When there are more than 9 block quotes in a string `escape_except_blockquotes` will fail do to the fact that the `BLOCKQUOTE_TOKEN_{i}` replacement will incorrectly match for both `BLOCKQUOTE_TOKEN_1` and `BLOCKQUOTE_TOKEN_10`

This just extends it to `BLOCKQUOTE_TOKEN_{i}_END` so this accidental match doesn't happen.

* update changelog

* Updated PR references in 1 changelogs.

skip-checks: true

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Co-authored-by: GitHub Action <github-action@users.noreply.github.com>

Author: jackgerrits

.changelog/_unreleased.toml

@@ -18,3 +18,10 @@ type = "breaking change"
 description = "Drop Python 3.7 compatibility"
 author = "@NiklasRosenstein"
 pr = "https://github.com/NiklasRosenstein/pydoc-markdown/pull/304"
+
+[[entries]]
+id = "78a8f6a1-eaaa-41cf-89f0-e746ddb42491"
+type = "fix"
+description = "Fix `escape_except_blockquotes` option for greater than 9 blockquotes in a docstring"
+author = "@jackgerrits"
+pr = "https://github.com/NiklasRosenstein/pydoc-markdown/pull/317"

src/pydoc_markdown/util/misc.py

@@ -16,13 +16,13 @@ def escape_except_blockquotes(string: str) -> str:
 
     # Replace all blockquotes with placeholder tokens to preserve their contents
     for i, match in enumerate(blockquote_matches):
-        string = string.replace(match, f"BLOCKQUOTE_TOKEN_{i}")
+        string = string.replace(match, f"BLOCKQUOTE_TOKEN_{i}_END")
 
     # Escape the remaining string
     escaped_string = html.escape(string)
 
     # Replace the placeholder tokens with their original contents
     for i, match in enumerate(blockquote_matches):
-        escaped_string = escaped_string.replace(f"BLOCKQUOTE_TOKEN_{i}", match)
+        escaped_string = escaped_string.replace(f"BLOCKQUOTE_TOKEN_{i}_END", match)
 
     return escaped_string