diff --git a/tag.c b/tag.c
index f97b2a4..1bbb270 100644
--- a/tag.c
+++ b/tag.c
@@ -450,8 +450,27 @@ tags_expand_template(const char *template, const struct tag_set *tags)
         sbuf_append_at_most(&formatted, template, begin - template);
 
         /* Copy tag value */
-        const char *value = tag->as_string(tag);
-        sbuf_append(&formatted, value);
+        if (tag_arg == NULL) {
+            const char *value = tag->as_string(tag);
+            sbuf_append(&formatted, value);
+        } else if (strcmp(tag_arg, "min") == 0 ||
+                   strcmp(tag_arg, "max") == 0)
+        {
+            long value = strcmp(tag_arg, "min") == 0 ? tag->min(tag) : tag->max(tag);
+            char str[24];
+            snprintf(str, sizeof(str), "%ld", value);
+            sbuf_append(&formatted, str);
+        } else if (strcmp(tag_arg, "unit") == 0) {
+            const char *value = NULL;
+
+            switch (tag->realtime(tag)) {
+            case TAG_REALTIME_NONE:  value = ""; break;
+            case TAG_REALTIME_SECS:  value = "s"; break;
+            case TAG_REALTIME_MSECS: value = "ms"; break;
+            }
+
+            sbuf_append(&formatted, value);
+        }
 
         /* Skip past tag name + closing '}' */
         template = end + 1;