- # this removes any trailing newline in the var, so we add it back on,
- # because we want a consistent ending to match
- local file_content
- if $readsudo; then
- file_content="$(sudo cat "$file")
-"
- else
- file_content="$(<"$file")
-"
- fi
- # we aren't using regex because we want to match strings,
- # but we also want our match to start at the beginning of a line,
- # or the beginning of the file, and to end at a line ending.
- # So we do some slick bash to match this.
- local start="?(*
+ # command substitution removes any trailing newlines, so we have to add
+ # a non-newline ending, we randomly chose "b", then remove it.
+ local content=$(cat "$file"; echo b)
+ content=${content%b}
+ fi
+
+ local reset_extglob=false
+ ! shopt extglob >/dev/null && reset_extglob=true
+ shopt -s extglob
+ # we aren't using regex because we want to match strings,
+ # but we also want our match to start at the beginning of a line,
+ # or the beginning of the file, and to end at a line ending.
+ # So we do some slick bash to match this.
+ local start="?(*