Add optimize as an alias of optimise

src/libutil/include/nix/util/args.hh

@@ -398,6 +398,8 @@ public:
         AcceptedShorthand,
         /** Aliases that will go away */
         Deprecated,
+        /** Aliases for linguistic variation */
+        LinguisticVariation,
     };
 
     /** An alias, except for the original syntax, which is in the map key. */

src/nix/store.cc

@@ -8,6 +8,7 @@ struct CmdStore : NixMultiCommand
     {
         aliases = {
             {"ping", { AliasStatus::Deprecated, {"info"}}},
+            {"optimize", { AliasStatus::LinguisticVariation, {"optimise"}}},
         };
     }
 

tests/functional/optimise-store.sh

@@ -41,6 +41,28 @@ if [ "$inode1" != "$inode3" ]; then
     exit 1
 fi
 
+outPath4=$(echo 'with import '"${config_nix}"'; mkDerivation { name = "foo4"; builder = builtins.toFile "builder" "mkdir $out; echo hello > $out/foo"; }' | nix-build - --no-out-link)
+
+NIX_REMOTE="" nix store optimise
+
+inode1="$(stat --format=%i $outPath1/foo)"
+inode4="$(stat --format=%i $outPath4/foo)"
+if [ "$inode1" != "$inode4" ]; then
+    echo "inodes do not match"
+    exit 1
+fi
+
+outPath5=$(echo 'with import '"${config_nix}"'; mkDerivation { name = "foo5"; builder = builtins.toFile "builder" "mkdir $out; echo hello > $out/foo"; }' | nix-build - --no-out-link)
+
+NIX_REMOTE="" nix store optimize # alias of optimise
+
+inode1="$(stat --format=%i $outPath1/foo)"
+inode5="$(stat --format=%i $outPath5/foo)"
+if [ "$inode1" != "$inode5" ]; then
+    echo "inodes do not match"
+    exit 1
+fi
+
 nix-store --gc
 
 if [ -n "$(ls $NIX_STORE_DIR/.links)" ]; then