grep may not work properly under FreeBSD

[PeterDaveHello]

Need to detect if gnu grep is installed and use it, or, rewrite to not use gnu grep only usage.

web-minify-helper/minify.sh

Line 63 in e629a67

elif [ $(wc -l "$filename.$filetype" | awk '{print $1}') -ge 15 ] || [ $(grep -E $'^(\t|\ )' "$filename.$filetype" | wc -l) -ge 5 ]; then

    elif [ $(wc -l "$filename.$filetype" | awk '{print $1}') -ge 15 ] || [ $(grep -E $'^(\t|\ )' "$filename.$filetype"  | wc -l) -ge 5 ]; then
        do_min=1
    fi

gnu grep reference:
https://unix.stackexchange.com/questions/65603/how-to-make-gnu-grep-the-default-in-freebsd

[DustinTheGreat]

Would calling a custom python script that mimics grep be acceptable?

[PeterDaveHello]

Hi @DustinTheGreat, I prefer not to bring another dependency like python in this case, thanks.

[n-st]

It seems that current versions of FreeBSD grep (i.e. after 2010) support the most common GNU extensions, and -E is even POSIX-compliant.
What FreeBSD (or other Unix) version have you seen this fail on?