Declare arrays

Since the precmd_functions and preexec_functions arrays won't be actually defined until __bp_install, which is called only during the first $PROMPT_COMMAND, declare empty arrays for these parameters.

This ensures that the shell is aware these things exist, which helps avoud unbound parameters failures in other scripts which depend upon this package.

Author: gaelicWizard

bash-preexec.sh

@@ -90,6 +90,10 @@ __bp_adjust_histcontrol() {
 # and unset as soon as the trace hook is run.
 __bp_preexec_interactive_mode=""
 
+# These arrays are used to add functions to be run before, or after, prompts.
+declare -a precmd_functions
+declare -a preexec_functions
+
 # Trims leading and trailing whitespace from $2 and writes it to the variable
 # name passed as $1
 __bp_trim_whitespace() {