only escape arguments, not the command name

PR-URL: #1906
Credit: @nlf
Close: #1906
Reviewed-by: @ruyadorno

Author: nlf

lib/exec.js

@@ -90,7 +90,7 @@ const exec = async args => {
 
     if (binExists) {
       return await runScript({
-        cmd: args.map(escapeArg).join(' ').trim(),
+        cmd: [args[0], ...args.slice(1).map(escapeArg)].join(' ').trim(),
         banner: false,
         // we always run in cwd, not --prefix
         path: process.cwd(),