jj-fzf: require 'gawk' as GNU awk binary

Signed-off-by: Tim Janik <timj@gnu.org>

Author: tim-janik

README.md

@@ -21,7 +21,7 @@ The available hotkeys are displayed onscreen for simple discoverability.
 The commands and key bindings can also be displayed with `jj-fzf --help` and are documented in the wiki: [jj-fzf-help](https://github.com/tim-janik/jj-fzf/wiki/jj-fzf-help)
 
 The `jj-fzf` script is implemented in bash-5.1, using fzf-0.29 and jj-0.23.0.
-Command line tools like sed, grep are assumed to provide GNU tool semantics.
+Command line tools like sed, grep, gawk are assumed to provide GNU tool semantics.
 
 <!-- USAGE -->
 ## Usage

jj-fzf

@@ -50,12 +50,12 @@ fi
 
 # == Check Deps ==
 VERSION=0.23.0
-jj --version --ignore-working-copy | grep -Eq 'jj 0\.2[3-9]\.' || die 'jj-0.23 is required'
-fzf --help | grep -Fq ' --header-first' || die 'fzf-0.29 is required'
-awk --version | grep -Fq 'GNU Awk' || die 'GNU Awk is required'
+jj --version --ignore-working-copy | grep -Eq 'jj 0\.2[3-9]\.' || die "failed to find 'jj' version 0.23 in \$PATH"
+fzf --help | grep -Fq ' --header-first' || die "failed to find 'fzf' version 0.29 in \$PATH"
 sed --version | grep -Fq 'GNU sed' &&
   gsed() { sed "$@"; } && export -f gsed ||
     gsed --version | grep -Fq 'GNU sed' || die "failed to find 'gsed' in \$PATH (GNU sed)"
+gawk --version | grep -Fq 'GNU Awk' || die "failed to find 'gawk' in \$PATH (GNU Awk)"
 TRACK=--track && FZFHELP="$(fzf --help 2>&1)" && [[ "$FZFHELP" =~ "--track" ]] || TRACK=
 
 # == Early Options ==