Fix UCM_PATH issues

Author: ChrisPenner

transcripts/transcript_functions.sh

@@ -11,7 +11,8 @@ mkdir -p "${ucm_xdg_data_dir}/unisonlanguage"
 ucm_credentials_file="${ucm_xdg_data_dir}/unisonlanguage/credentials.json"
 
 # Executable to use when running unison transcripts
-export UCM_PATH="${UCM_PATH:-"$(which ucm)"}"
+UCM_PATH="$(which ucm)"
+export UCM_PATH
 export empty_causal_hash='sg60bvjo91fsoo7pkh9gejbn0qgc95vra87ap6l5d35ri0lkaudl7bs12d71sf3fh6p23teemuor7mk1i9n567m50ibakcghjec5ajg'
 export echo_server_port=9999
 export echo_server="http://localhost:${echo_server_port}"