stat: print "Block size" in file system mode

src/uu/stat/locales/en-US.ftl

@@ -90,6 +90,7 @@ stat-word-block = Block
 stat-word-size = Size
 stat-word-fundamental = Fundamental
 stat-word-block-size = block size
+stat-word-block-size-capitalized = Block size
 stat-word-blocks = Blocks
 stat-word-total = Total
 stat-word-free = Free

src/uu/stat/locales/fr-FR.ftl

@@ -73,6 +73,7 @@ stat-word-block = Bloc
 stat-word-size = Taille
 stat-word-fundamental = Fondamentale
 stat-word-block-size = taille bloc
+stat-word-block-size-capitalized = Taille bloc
 stat-word-blocks = Blocs
 stat-word-total = Total
 stat-word-free = Libres

src/uu/stat/src/stat.rs

@@ -1428,15 +1428,14 @@ impl Stater {
                 "%n %i %l %t %s %S %b %f %a %c %d\n".into()
             } else {
                 format!(
-                    "  {}: \"%n\"\n    {}: %-8i {}: %-7l {}: %T\n{} \
-                         {}: %-10s {} {}: %S\n{}: {}: %-10b \
+                    "  {}: \"%n\"\n    {}: %-8i {}: %-7l {}: %T\n{}: %-10s \
+                         {} {}: %S\n{}: {}: %-10b \
                          {}: %-10f {}: %a\n{}: {}: %-10c {}: %d\n",
                     translate!("stat-word-file"),
                     translate!("stat-word-id"),
                     translate!("stat-word-namelen"),
                     translate!("stat-word-type"),
-                    translate!("stat-word-block"),
-                    translate!("stat-word-size"),
+                    translate!("stat-word-block-size-capitalized"),
                     translate!("stat-word-fundamental"),
                     translate!("stat-word-block-size"),
                     translate!("stat-word-blocks"),

tests/by-util/test_stat.rs

@@ -52,6 +52,18 @@ fn test_fs_format() {
     ts.ucmd().args(&args).succeeds().stdout_is(expected_stdout);
 }
 
+#[test]
+// `stat -f` is only implemented for these targets; elsewhere `fs_type` is
+// still `unimplemented!()`.
+#[cfg(any(target_os = "linux", target_os = "android"))]
+fn test_fs_default_format_block_size_label() {
+    // GNU prints "Block size:", not "Block Size:".
+    new_ucmd!()
+        .args(&["-f", "/"])
+        .succeeds()
+        .stdout_contains("Block size:");
+}
+
 #[cfg(unix)]
 #[test]
 fn test_terse_normal_format() {