From beafd4c14d52004d059b6891a95d873df6221796 Mon Sep 17 00:00:00 2001
From: Jens Petersen <petersen@redhat.com>
Date: Sun, 12 Nov 2023 15:44:36 +0800
Subject: [PATCH] improve ghc-info.sh with a show mode

---
 ghc-info.sh | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/ghc-info.sh b/ghc-info.sh
index af1eabf..598faa2 100755
--- a/ghc-info.sh
+++ b/ghc-info.sh
@@ -1,8 +1,12 @@
 #!/bin/sh
 
-[ $# -lt 2 ] && echo "Usage: $(basename "$0") GHCVERSION INFOFIELD"
+[ $# -lt 1 ] && echo "Usage: $(basename "$0") GHCVERSION INFOFIELD" && exit 1
 
-GHCVER=$1
-FIELD=$2
+GHCVER="$1"
+FIELD="$2"
 
-/usr/bin/ghc-${GHCVER} --info | grep \"$FIELD\" | sed -e 's/.*","\(.*\)")/\1/'
+if [ -z "$FIELD" ]; then
+    /usr/bin/ghc-${GHCVER} --info | sed -e 's/.*(\(".*"\),\(".*"\).*/\1: \2/' -e '/]/d'
+else
+    /usr/bin/ghc-${GHCVER} --info | grep \""$FIELD"\" | sed -e 's/.*","\(.*\)")/\1/'
+fi