From cab63eedd4ae6cca071cbeb078a154d7abfaf582 Mon Sep 17 00:00:00 2001
From: rlar <rlar>
Date: Sat, 2 May 2015 11:18:30 +0200
Subject: [PATCH] frontend/com_let.c, bug fix, "#302 Integer in Let Statement"

let 2foo = someexpression

was silently accepted, even though 2foo is an illegal identifier.
  (first letter is a digit)

This was especially irritating, since
  print 2foo
has a legal meaning, 2 femto oO, which is 2e-15
  (whatever Unit an oO might be)

Reported by Justin Fisher in
  http://sourceforge.net/p/ngspice/bugs/302/
---
 src/frontend/com_let.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/frontend/com_let.c b/src/frontend/com_let.c
index 37117be1e..6be08c4ce 100644
--- a/src/frontend/com_let.c
+++ b/src/frontend/com_let.c
@@ -123,7 +123,7 @@ com_let(wordlist *wl)
     *++q = '\0';
 
     /* sanity check */
-    if (eq(p, "all") ||strchr(p, '@')) {
+    if (eq(p, "all") || strchr(p, '@') || isdigit(*p)) {
         fprintf(cp_err, "Error: bad variable name %s\n", p);
         tfree(p);
         return;