Update old diff blocks

Author: sfc-gh-dmatthews

content/deploy/community-cloud/get-started/quickstart.md

@@ -81,7 +81,7 @@ You will sign in to your GitHub account during this process. Community Cloud wil
 
 1. Go to the app's entrypoint file (`streamlit_app.py`) in the left pane, and change line 3 by adding "Streamlit" inside `st.title`.
 
-   ```diff
+   ```diff-python
    -st.title("🎈 My new app")
    +st.title("🎈 My new Streamlit app")
    ```

content/develop/tutorials/authentication/google.md

@@ -207,10 +207,10 @@ To create an app with user authentication, you'll need to configure your secrets
 
    <Note>
       If you don't want to use a callback, you can replace the last line with an equivalent `if` statement:
-      ```diff
-      -  st.button("Log in with Google", on_click=st.login)
-      +  if st.button("Log in with Google"):
-      +     st.login()
+      ```diff-python
+      -    st.button("Log in with Google", on_click=st.login)
+      +    if st.button("Log in with Google"):
+      +        st.login()
       ```
    </Note>
 
@@ -233,10 +233,10 @@ To create an app with user authentication, you'll need to configure your secrets
 
 1. Replace `st.user` with a personalized greeting:
 
-   ```diff
-   else:
-   -   st.user
-   +   st.header(f"Welcome, {st.user.name}!")
+   ```diff-python
+   =else:
+   -    st.user
+   +    st.header(f"Welcome, {st.user.name}!")
    ```
 
 1. Add a logout button:

content/develop/tutorials/authentication/microsoft.md

@@ -193,10 +193,10 @@ To create an app with user authentication, you'll need to configure your secrets
 
    <Note>
       If you don't want to use a callback, you can replace the last line with an equivalent `if` statement:
-      ```diff
-      -  st.button("Log in with Microsoft", on_click=st.login)
-      +  if st.button("Log in with Microsoft"):
-      +     st.login()
+      ```diff-python
+      -    st.button("Log in with Microsoft", on_click=st.login)
+      +    if st.button("Log in with Microsoft"):
+      +        st.login()
       ```
    </Note>
 
@@ -219,10 +219,10 @@ To create an app with user authentication, you'll need to configure your secrets
 
 1. Replace `st.user` with a personalized greeting:
 
-   ```diff
-   else:
-   -   st.user
-   +   st.header(f"Welcome, {st.user.name}!")
+   ```diff-python
+   =else:
+   -    st.user
+   +    st.header(f"Welcome, {st.user.name}!")
    ```
 
 1. Add a logout button:

content/develop/tutorials/llms/chat-response-feedback.md

@@ -216,14 +216,14 @@ To make your chat app stateful, you'll save the conversation history into Sessio
 
 1. Add the callback and index argument to your `st.feedback` widget:
 
-   ```diff
-               st.feedback(
-                   "thumbs",
-                   key=f"feedback_{i}",
-                   disabled=feedback is not None,
-   +               on_change=save_feedback,
-   +               args=[i],
-               )
+   ```diff-python
+   =            st.feedback(
+   =                "thumbs",
+   =                key=f"feedback_{i}",
+   =                disabled=feedback is not None,
+   +                on_change=save_feedback,
+   +                args=[i],
+   =            )
    ```
 
    When a user interacts with the feedback widget, the callback will update the chat history before the app reruns.
@@ -277,36 +277,36 @@ Your app currently allows users to rate any response once. They can submit their
 
 If you want users to rate only the _most recent_ response, you can remove the widgets from the chat history:
 
-```diff
-  for i, message in enumerate(st.session_state.history):
-      with st.chat_message(message["role"]):
-          st.write(message["content"])
--         if message["role"] == "assistant":
--             feedback = message.get("feedback", None)
--             st.session_state[f"feedback_{i}"] = feedback
--             st.feedback(
--                 "thumbs",
--                 key=f"feedback_{i}",
--                 disabled=feedback is not None,
--                 on_change=save_feedback,
--                 args=[i],
--             )
+```diff-python
+=  for i, message in enumerate(st.session_state.history):
+=      with st.chat_message(message["role"]):
+=          st.write(message["content"])
+-          if message["role"] == "assistant":
+-              feedback = message.get("feedback", None)
+-              st.session_state[f"feedback_{i}"] = feedback
+-              st.feedback(
+-                  "thumbs",
+-                  key=f"feedback_{i}",
+-                  disabled=feedback is not None,
+-                  on_change=save_feedback,
+-                  args=[i],
+-              )
 ```
 
 Or, if you want to allow users to change their responses, you can just remove the `disabled` parameter:
 
-```diff
-  for i, message in enumerate(st.session_state.history):
-      with st.chat_message(message["role"]):
-          st.write(message["content"])
-          if message["role"] == "assistant":
-              feedback = message.get("feedback", None)
-              st.session_state[f"feedback_{i}"] = feedback
-              st.feedback(
-                  "thumbs",
-                  key=f"feedback_{i}",
--                 disabled=feedback is not None,
-                  on_change=save_feedback,
-                  args=[i],
-              )
+```diff-python
+=  for i, message in enumerate(st.session_state.history):
+=      with st.chat_message(message["role"]):
+=          st.write(message["content"])
+=          if message["role"] == "assistant":
+=              feedback = message.get("feedback", None)
+=              st.session_state[f"feedback_{i}"] = feedback
+=              st.feedback(
+=                  "thumbs",
+=                  key=f"feedback_{i}",
+-                  disabled=feedback is not None,
+=                  on_change=save_feedback,
+=                  args=[i],
+=              )
 ```

content/develop/tutorials/llms/chat-response-revision.md

@@ -762,17 +762,17 @@ To see another edge case, try this in the running example:
 
 When you click a button with an unsubmitted value in another widget, Streamlit will update that widget's value and the button's value in succession before triggering the rerun. Because there isn't a rerun between updating the text area and updating the button, the "**Update**" button doesn't get disabled as expected. To correct this, you can add an extra check for an empty text area within the `"rewrite"` stage:
 
-```diff
--       if st.button(
--           "Update", type="primary", disabled=new is None or new.strip(". ") == ""
--       ):
-+       is_empty = new is None or new.strip(". ") == ""
-+       if st.button("Update", type="primary", disabled=is_empty) and not is_empty:
-            st.session_state.history.append({"role": "assistant", "content": new})
-            st.session_state.pending = None
-            st.session_state.validation = {}
-            st.session_state.stage = "user"
-            st.rerun()
+```diff-python
+-        if st.button(
+-            "Update", type="primary", disabled=new is None or new.strip(". ") == ""
+-        ):
++        is_empty = new is None or new.strip(". ") == ""
++        if st.button("Update", type="primary", disabled=is_empty) and not is_empty:
+=            st.session_state.history.append({"role": "assistant", "content": new})
+=            st.session_state.pending = None
+=            st.session_state.validation = {}
+=            st.session_state.stage = "user"
+=            st.rerun()
 ```
 
 Now, if you repeat the listed steps, when the app reruns, the conditional block won't be executed even though the button triggered the rerun. The button will be disabled and the user can proceed as if they had just clicked or tabbed out of the text area.

content/get-started/installation/cloud-quickstart.md

@@ -81,7 +81,7 @@ If you already created a Community Cloud account and connected GitHub, jump ahea
 
 1. Go to the app's entrypoint file (`streamlit_app.py`) in the left pane, and change line 3 by adding "Streamlit" inside `st.title`.
 
-   ```diff
+   ```diff-python
    -st.title("🎈 My new app")
    +st.title("🎈 My new Streamlit app")
    ```