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Check for empty or whitespace PROMPT_COMMAND before appending preexec_invoke_cmd

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Eric Anders
2016-08-04 15:51:15 -05:00
parent 6060c87178
commit 3b56275ef6
1 changed files with 5 additions and 1 deletions
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6
lib/preexec.bash
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@@ -122,7 +122,11 @@ function preexec_install () {
shopt -s extdebug > /dev/null 2>&1 shopt -s extdebug > /dev/null 2>&1
# Finally, install the actual traps. # Finally, install the actual traps.
PROMPT_COMMAND="${PROMPT_COMMAND};preexec_invoke_cmd" if [[ ! -z "${PROMPT_COMMAND// }" ]]; then
PROMPT_COMMAND="${PROMPT_COMMAND};preexec_invoke_cmd"
else
PROMPT_COMMAND="preexec_invoke_cmd"
fi
trap 'preexec_invoke_exec' DEBUG trap 'preexec_invoke_exec' DEBUG
} }