From 4ba80c37c068dd1839101c6c1f8ceed49f696d5f Mon Sep 17 00:00:00 2001
From: Donald Lam <brainy.runt@gmail.com>
Date: Sun, 11 Apr 2021 11:06:44 -0700
Subject: Fix amount tokenizer re: embedded minus sign.

An amount may have a (single) leading minus sign, but none after that.
Bug #2001 (and #1809).
---
 src/amount.cc | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'src/amount.cc')

diff --git a/src/amount.cc b/src/amount.cc
index 788a140c..6baa903c 100644
--- a/src/amount.cc
+++ b/src/amount.cc
@@ -975,8 +975,15 @@ namespace {
   {
     char buf[256];
     char c = peek_next_nonws(in);
-    READ_INTO(in, buf, 255, c,
-              std::isdigit(c) || c == '-' || c == '.' || c == ',');
+    int max = 255;
+    char *p = buf;
+    if (c == '-') {
+      *p++ = c;
+      max--;
+      in.get(c);
+    }
+    READ_INTO(in, p, max, c,
+              std::isdigit(c) || c == '.' || c == ',');
 
     string::size_type len = std::strlen(buf);
     while (len > 0 && ! std::isdigit(buf[len - 1])) {
-- 
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