# e = run script, $a\ means append following text, but there is none,
# so sed only does what it always does when it was supposed to modify a file,
# which is append a newline if there was none.
- sed -ie '$a\' "$file"
+ sed -i '$a\' "$file"
# command substitution removes any trailing newlines, so we have to add
# a non-newline ending, we randomly chose "b", then remove it.
local content=$(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.
fi
fi
done
+ $reset_extglob && shopt -u extglob
return 0
}
appendu "$@"