Allow symlinks to tea to execute those commands (pkgxdev#191)

src/hooks/useFlags.ts

@@ -4,6 +4,7 @@ import { isNumber } from "is_what"
 import { set_tmp } from "path"
 import { usePrefix } from "hooks"
 import Path from "path"
+import { lstatSync } from "https://deno.land/[email protected]/node/fs.ts";
 
 // doing here as this is the only file all our scripts import
 set_tmp(usePrefix().join('tea.xyz/tmp'))
@@ -63,10 +64,18 @@ export type Args = {
 export function useArgs(args: string[], arg0: string): [Args, Flags & ConvenienceFlags] {
   if (flags) throw new Error("contract-violated")
 
-  if (/(.+\/|^)tea_(.+)$/.test(arg0)) {
-    args = [...args]  // args is usually the immutable `Deno.args`
-    const match = arg0.match(/tea_(.+)$/)!
-    args.unshift("-X", match[1])
+  if (lstatSync(arg0).isSymbolicLink()) {
+    const arg0_basename = new Path(arg0).basename()
+    if (arg0_basename != "tea") {
+      args = [...args]  // args is usually the immutable `Deno.args`
+      if (/^tea_([^\/]+)$/.test(arg0_basename)) {
+        //TODO apply non-magic mode
+        const match = arg0_basename.match(/^tea_([^\/]+)$/)!
+        args.unshift("-X", match[1])
+      } else {
+        args.unshift("-X", arg0_basename)
+      }
+    }
   }
 
   const rv: Args = {