From d2582b9619615f79456db87be336d50b09a13e74 Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Tue, 2 Oct 2007 18:53:31 +0000
Subject: [PATCH] *) add sub_filter parser fix similar to r1261 in SSI parser
 *) fix case when pattern is split between two buffers:    it had been fixed
 in SSI parser long ago

---
 src/http/modules/ngx_http_sub_filter_module.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/http/modules/ngx_http_sub_filter_module.c b/src/http/modules/ngx_http_sub_filter_module.c
index a9fe8d407..93d1b36ef 100644
--- a/src/http/modules/ngx_http_sub_filter_module.c
+++ b/src/http/modules/ngx_http_sub_filter_module.c
@@ -562,6 +562,7 @@ ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx)
                 ch = ngx_tolower(ch);
             }
 
+            ctx->state = state;
             ctx->pos = p;
             ctx->looked = looked;
             ctx->copy_end = p;
@@ -583,6 +584,10 @@ ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx)
             looked++;
 
             if (looked == ctx->match.len) {
+                if ((size_t) (p - ctx->pos) < looked) {
+                    ctx->saved = 0;
+                }
+
                 ctx->state = sub_start_state;
                 ctx->pos = p + 1;
                 ctx->looked = looked;