From 118ec70ea27000db428ba3e3a757f4b423670db6 Mon Sep 17 00:00:00 2001
From: Skip Montanaro <skip@pobox.com>
Date: Thu, 15 Aug 2002 01:20:16 +0000
Subject: [PATCH] provide less mysterious error messages when seeing
 end-of-line in single-quoted strings or end-of-file in triple-quoted strings.
 closes patch 586561.

---
 Include/errcode.h  | 2 ++
 Parser/tokenizer.c | 9 ++++++---
 Python/pythonrun.c | 6 ++++++
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/Include/errcode.h b/Include/errcode.h
index a8b1aaab6f7..985911eea4f 100644
--- a/Include/errcode.h
+++ b/Include/errcode.h
@@ -26,6 +26,8 @@ extern "C" {
 #define E_TOODEEP	20	/* Too many indentation levels */
 #define E_DEDENT	21	/* No matching outer block for dedent */
 #define E_DECODE	22	/* Error in decoding into Unicode */
+#define E_EOFS		23	/* EOF in triple-quoted string */
+#define E_EOLS		24	/* EOL in single-quoted string */
 
 #ifdef __cplusplus
 }
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
index 64ff320d65f..7e7a37025ca 100644
--- a/Parser/tokenizer.c
+++ b/Parser/tokenizer.c
@@ -1276,14 +1276,17 @@ tok_get(register struct tok_state *tok, char **p_start, char **p_end)
 			c = tok_nextc(tok);
 			if (c == '\n') {
 				if (!triple) {
-					tok->done = E_TOKEN;
+					tok->done = E_EOLS;
 					tok_backup(tok, c);
 					return ERRORTOKEN;
 				}
 				tripcount = 0;
 			}
 			else if (c == EOF) {
-				tok->done = E_TOKEN;
+				if (triple)
+					tok->done = E_EOFS;
+				else
+					tok->done = E_EOLS;
 				tok->cur = tok->inp;
 				return ERRORTOKEN;
 			}
@@ -1305,7 +1308,7 @@ tok_get(register struct tok_state *tok, char **p_start, char **p_end)
 				tripcount = 0;
 				c = tok_nextc(tok);
 				if (c == EOF) {
-					tok->done = E_TOKEN;
+					tok->done = E_EOLS;
 					tok->cur = tok->inp;
 					return ERRORTOKEN;
 				}
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 006ff083d25..28a8e28e118 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1247,6 +1247,12 @@ err_input(perrdetail *err)
 	case E_TOKEN:
 		msg = "invalid token";
 		break;
+	case E_EOFS:
+		msg = "EOF while scanning triple-quoted string";
+		break;
+	case E_EOLS:
+		msg = "EOL while scanning single-quoted string";
+		break;
 	case E_INTR:
 		PyErr_SetNone(PyExc_KeyboardInterrupt);
 		Py_XDECREF(v);