修复 macOS 中 stapp.py ，streamlit 界面chat输入框不能用 Home / End 键跳转光标，不知道 windows 上有没有同样问题
diff --git a/frontends/stapp.py b/frontends/stapp.py
index e5fb6b2..ec3902c 100644
--- a/frontends/stapp.py
+++ b/frontends/stapp.py
@@ -186,7 +186,19 @@ _js_ime_fix = ("" if os.name == 'nt' else
"e.key==='Enter'&&!e.shiftKey&&(e.isComposing||c||e.keyCode===229)&&"
"(e.stopImmediatePropagation(),e.preventDefault())},!0))})}"
"f();new MutationObserver(f).observe(d.body,{childList:1,subtree:1})}()")
-_embed_html(f'<script>{_js_scroll_fix};{_js_ime_fix}</script>', height=0)
+_js_homeend_fix = (
+ "!function(){if(window.parent.__hef)return;window.parent.__hef=1;"
+ "var d=window.parent.document;"
+ "function f(){d.querySelectorAll('textarea[data-testid=stChatInputTextArea]')"
+ ".forEach(t=>{if(t.__hef)return;t.__hef=1;"
+ "t.addEventListener('keydown',e=>{"
+ "if(e.key==='Home'||e.key==='End'){"
+ "e.preventDefault();e.stopPropagation();"
+ "t.selectionStart=t.selectionEnd=(e.key==='Home')?0:t.value.length;"
+ "}},!0)})}"
+ "f();new MutationObserver(f).observe(d.body,{childList:1,subtree:1})}()"
+)
+_embed_html(f'<script>{_js_scroll_fix};{_js_ime_fix};{_js_homeend_fix}</script>', height=0)
if prompt := st.chat_input("any task?"):
ts = time.strftime("%Y-%m-%d %H:%M:%S")
修复 macOS 中 stapp.py ，streamlit 界面chat输入框不能用 Home / End 键跳转光标，不知道 windows 上有没有同样问题