restore report of supported options (#1861)

fixes #1859
2017-05-02 01:42:29 +08:00 · 2017-05-02 01:42:29 +08:00 · 69b5663653
commit 69b5663653
parent ea9289771b
1 changed files with 4 additions and 0 deletions
--- a/bin/uglifyjs
+++ b/bin/uglifyjs
@ -205,6 +205,10 @@ function run() {
                console.error(line.slice(0, col).replace(/\S/g, " ") + "^");
            }
        }
+        if (ex.defs) {
+            console.error("Supported options:");
+            console.error(ex.defs);
+        }
        fatal("ERROR: " + ex.message);
    }
    if (program.output == "spidermonkey") {