bash-completions-getter: Return with error if completion command failed

Author: 3v1n0

bash-completions-getter.sh

@@ -250,8 +250,8 @@ get_completions() {
     if [ "$COMPLETE_CALL_TYPE" == 'C' ]; then
         export COMP_CWORD COMP_LINE COMP_POINT COMP_WORDS COMP_WORDBREAKS
         mapfile -t COMPREPLY < <("${cmd[@]}" 2>"$errorout")
-    else
-        "${cmd[@]}" 2>"$errorout"
+    elif ! "${cmd[@]}" 2>"$errorout"; then
+        return 1
     fi
 
     [ ${#COMPLETE_WORDS[@]} -gt 0 ] &&

tests/test-bash-completions-getter.sh

@@ -109,6 +109,9 @@ check_completion foo-with-multiple-words "foo --bar"
 complete -o nospace -W "foo" foo-with-word-and-option
 check_completion foo-with-word-and-option "foo" nospace
 
+complete -F foo_complete_function_not_existant foo-with-function-invalid
+expect_failure foo-with-function-invalid
+
 function foo_complete_function_simple() {
     EXPECTED_COMPLETE_PROGRAM=foo-with-function-simple
     EXPECTED_COMPLETE_WORD="''"