Merge pull request #775 from stuckshut/fix_double_semicolon

Check for empty PROMPT_COMMAND before appending preexec_invoke_cmd Fixes #767
2016-08-05 09:16:58 +02:00
parent 84379a4620 3b56275ef6
commit a3c482d8d9
1 changed files with 5 additions and 1 deletions
--- a/lib/preexec.bash
+++ b/lib/preexec.bash
@@ -122,7 +122,11 @@ function preexec_install () {
    shopt -s extdebug > /dev/null 2>&1

    # 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
 }