ENH: reduce chance of false positives when generating bash completions

- only treat text as an option if it is preceded by 0-4 spaces.
  This prevents the description of an option from being accidentally
  detected as an option.

bin/foamCreateBashCompletions

@@ -149,10 +149,10 @@ do
         echo "Processing $appName"
 
         # Options with args
-        optsWithArgs=($(awk '/^ *-[a-z]/ && /</ {print $1}' <<< "$appHelp"))
+        optsWithArgs=($(awk '/^ {0,4}-[a-z]/ && /</ {print $1}' <<< "$appHelp"))
 
         # Options without args
-        opts=($(awk '/^ *-[a-z]/ && !/</ {print $1}' <<< "$appHelp"))
+        opts=($(awk '/^ {0,4}-[a-z]/ && !/</ {print $1}' <<< "$appHelp"))
 
         cat<<WRITECOMPLETION >> $outFile
 unset -f _${appName}