Alias inside function gives command not found

[Khan Smith]

   Sent: Thursday, October 14, 2021 at 12:55 AM
   From: "Seth David Schoen" <schoen@loyalty.org>
   To: "Khan Smith" <khansmith@mail.com>
   Cc: "help-bash" <help-bash@gnu.org>
   Subject: Re: Alias inside function gives command not found
   Khan Smith writes:
   > I am in a bash function with the following code
   >
   > alias etgrep='/bin/grep'
   > etgrep -r -l "${isufx[@]}" -e "$ptrn" -- "${fdir[@]}" | sed
   > "${sta}~${stp}!d"
   > unalias etgrep
   >
   > Though everything was valid, but running the function in giving me
   >
   > bash: etgrep: command not found
   I'm not sure why this is so in terms of bash scoping rules, but you can
   make etgrep itself a function, like
   etgrep() { /bin/grep "$@"; };
   at which point you can use it inside of another function (including if
   it was defined there). Instead of unalias, you can remove the function
   binding with "unset etgrep". This should probably work as well for most
   purposes.


   I was doing this because I have an alias for grep that uses colour.
   But
   when I use grep, the file matches include the colour codes.  This makes
   problems when piping the grep results to ather commands.