style: use command to call sed

Author: akinomyoga

completions/ps

@@ -62,7 +62,7 @@ _comp_cmd_ps()
             "$1" --help
             "$1" --help all
         } 2>/dev/null |
-            sed -e "s/, [A-Za-z],/,/")" ||
+            command sed -e "s/, [A-Za-z],/,/")" ||
             _comp_compgen_usage
     fi
 } &&

completions/reportbug

@@ -33,7 +33,7 @@ _comp_cmd_reportbug()
             ;;
         --tag | --ui | --interface | --type | --bts | --severity | --mode | -${noargopts}[TutBS])
             _comp_compgen_split -- "$("$1" "$prev" help 2>&1 |
-                sed -ne '/^[[:space:]]/p')"
+                command sed -ne '/^[[:space:]]/p')"
             return
             ;;
         --editor | --mua | --mbox-reader-cmd | -${noargopts}e)

completions/rsync

@@ -65,7 +65,7 @@ _comp_cmd_rsync()
             # meaning before v3.2.0) contain the following unusual line in
             # --help:
             # "(-h) --help                  show this help (-h is --help only if used alone)"
-            _comp_compgen -Rv tmp help - <<<"$("$1" --help 2>&1 | sed -e 's/^([^)]*)//')"
+            _comp_compgen -Rv tmp help - <<<"$("$1" --help 2>&1 | command sed -e 's/^([^)]*)//')"
 
             _comp_compgen -- -W '"${tmp[@]}"
                 --daemon --old-d{,irs}