Better exit code & diffing for PKGBUILD terms

Hooks/scripts.d/check-AniNIX-PKGBUILD

@@ -3,10 +3,10 @@
 # Ensure that the following lines match the base PKGBUILD
 
 export retcode=0
-for term in pkgname replaces pkgver epoch pkgdesc url license ../LICENSE; do
-    current="$(grep -E "^${term}=" ./PKGBUILD)"
-    reference="$(grep -E "^${term}=" /opt/aninix/Uniglot/pacman/PKGBUILD)"
-    diff -w --color=always <(printf "${reference}") <(echo "${current}")
+for term in ^pkgname\= ^replaces\= ^pkgver\= ^epoch\= ^pkgdesc\= ^url\= ^license\= ../LICENSE; do
+    current="$(grep -E "${term}" ./PKGBUILD)"
+    reference="$(grep -E "${term}" /opt/aninix/Uniglot/pacman/PKGBUILD)"
+    diff -w --color=always <(printf "${reference}") <(printf "${current}")
     export retcode="$(( $retcode || $? ))";
     if [ "$retcode" != 0 ]; then
         echo "$term has delta."
@@ -24,4 +24,5 @@ if [ "$(basename "$PWD")" == 'Uniglot' ] && [ "$retcode" != 0 ]; then
     fi
 elif [ "$retcode" != 0 ]; then
     echo ERROR: PKGBUILD is out of sync with AniNIX/Uniglot.
+    exit 1
 fi

Hooks/scripts.d/check-AniNIX-READMEs

@@ -21,7 +21,7 @@ for file in $files; do
 
     # Enforce each of the lines
     for line in '^# Etymology$' '^# Relevant Files and Software$' '^# Available Clients$' '^# Equivalents or Competition$'; do
-        newlinenum="$(grep -nE "$line" "$file" | cut -f 1 -d ':')"
+        newlinenum="$(grep -m 1 -nE "$line" "$file" | cut -f 1 -d ':')"
 
         # Case 1: Missing section
         if [ -z "$newlinenum" ]; then