Merge branch 'maint' to synchronize with 1.5.3.6

* maint:
  GIT 1.5.3.6
  grep -An -Bm: fix invocation of external grep command

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes-1.5.3.6.txt

@@ -4,16 +4,18 @@ GIT v1.5.3.6 Release Notes
 Fixes since v1.5.3.5
 --------------------
 
- * git-cvsexportcommit handles root commits better;
+ * git-cvsexportcommit handles root commits better.
 
  * git-svn dcommit used to clobber when sending a series of
-   patches;
+   patches.
 
  * git-svn dcommit failed after attempting to rebase when
    started with a dirty index; now it stops upfront.
 
  * git-grep sometimes refused to work when your index was
-   unmerged;
+   unmerged.
+
+ * "git-grep -A1 -B2" acted as if it was told to run "git -A1 -B21".
 
  * git-hash-object did not honor configuration variables, such as
    core.compression.
@@ -44,9 +46,3 @@ Fixes since v1.5.3.5
    of deflateBound() has been added.
 
  * Quite a lot of documentation clarifications.
-
---
-exec >/var/tmp/1
-O=v1.5.3.5-57-gb574c8d
-echo O=`git describe refs/heads/maint`
-git shortlog --no-merges $O..refs/heads/maint

Documentation/git.txt

@@ -46,6 +46,7 @@ Documentation for older releases are available here:
 * link:v1.5.3/git.html[documentation for release 1.5.3]
 
 * release notes for
+  link:RelNotes-1.5.3.6.txt[1.5.3.6],
   link:RelNotes-1.5.3.5.txt[1.5.3.5],
   link:RelNotes-1.5.3.4.txt[1.5.3.4],
   link:RelNotes-1.5.3.3.txt[1.5.3.3],

builtin-grep.c

@@ -294,7 +294,7 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
 			if (opt->pre_context) {
 				push_arg("-B");
 				len += snprintf(argptr, sizeof(randarg)-len,
-						"%u", opt->pre_context);
+						"%u", opt->pre_context) + 1;
 				if (sizeof(randarg) <= len)
 					die("maximum length of args exceeded");
 				push_arg(argptr);
@@ -303,7 +303,7 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
 			if (opt->post_context) {
 				push_arg("-A");
 				len += snprintf(argptr, sizeof(randarg)-len,
-						"%u", opt->post_context);
+						"%u", opt->post_context) + 1;
 				if (sizeof(randarg) <= len)
 					die("maximum length of args exceeded");
 				push_arg(argptr);
@@ -313,7 +313,7 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached)
 		else {
 			push_arg("-C");
 			len += snprintf(argptr, sizeof(randarg)-len,
-					"%u", opt->post_context);
+					"%u", opt->post_context) + 1;
 			if (sizeof(randarg) <= len)
 				die("maximum length of args exceeded");
 			push_arg(argptr);