migrate to dotter

configs/fish/functions/_pure_get_prompt_symbol.fish

@@ -0,0 +1,12 @@
+function _pure_get_prompt_symbol \
+    --description 'Print prompt symbol' \
+    --argument-names exit_code
+
+    set --local prompt_symbol $pure_symbol_prompt
+    test "$pure_reverse_prompt_symbol_in_vimode" = true
+    and string match -rq "fish_(vi|hybrid)_key_bindings" $fish_key_bindings
+    and not contains "$fish_bind_mode" insert replace
+    and set prompt_symbol $pure_symbol_reverse_prompt
+
+    echo "$prompt_symbol"
+end