Re: Detecting an opening { and a closing } in a variable

[Lawrence Velázquez]

On Mon, May 30, 2022, at 2:42 PM, goncholden wrote:
> I do not know the details on code injection.  Am using a function that 
> searches for a phrase using grep.
>
>   local progl=( "\*.{rc,.el,c,f}" )
>   local pextd=( "${progl[@]}" "\*.{cp,cpp,f90,f95,f03,f08}" )
>
>   local inclsf=()
>   for el in "${incl[@]}" ; do
>     case $el in
>      "progl") inclsf+=( "${progl[@]}" ) ;;
>      "pextd") inclsf+=( "${pextd[@]}" ) ;;
>      "typog") inclsf+=( "${typog[@]}" ) ;;
>      *) inclsf+=( "$el" ) ;;
>     esac
>   done
>
>   if (( ${#incl[@]} > 0 )); then
>
>     # Split INCL by field separator FS
>     for ext in "${inclsf[@]}"; do
>       [[ "$ext" =~ "{*}" ]] && echo "Detected {}"
>       s="$ext"
>       [[ (! -z "$fs") && ("$ext" == *"$fs"*) ]] && s=${ext//"$fs"/" "}
>       for fltyp in $s; do
>         isufx+=( --include="$fltyp" )
>       done
>     done
>
>   fi
>
>   grep --null -r -l "${isufx[@]}" -e "$phrs" -- "${fdir[@]}"

Why not just use brace expansion instead of trying to reimplement it?

    incl_args=(--include=\*.{rc,el,c,f,cp,cpp,f90,f95,f03,f08})

    grep "${incl_args[@]}" -- whatever


-- 
vq