Added nvim / ghostty / starship config

Signed-off-by: Rack Lin <racklin@gmail.com>

fish/functions/_fzf_extract_var_info.fish

@@ -0,0 +1,15 @@
+# helper function for _fzf_search_variables
+function _fzf_extract_var_info --argument-names variable_name set_show_output --description "Extract and reformat lines pertaining to \$variable_name from \$set_show_output."
+    # Extract only the lines about the variable, all of which begin with either
+    # $variable_name: ...or... $variable_name[
+    string match --regex "^\\\$$variable_name(?::|\[).*" <$set_show_output |
+
+        # Strip the variable name prefix, including ": " for scope info lines
+        string replace --regex "^\\\$$variable_name(?:: )?" '' |
+
+        # Distill the lines of values, replacing...
+        #   [1]: |value|
+        # ...with...
+        #   [1] value
+        string replace --regex ": \|(.*)\|" ' $1'
+end