diff --git a/Documentation/RelNotes/2.21.0.txt b/Documentation/RelNotes/2.21.0.txt
index 8a9a8dd..702ebfc 100644
--- a/Documentation/RelNotes/2.21.0.txt
+++ b/Documentation/RelNotes/2.21.0.txt
@@ -26,7 +26,7 @@
    the fast-export side has been made.
 
  * "git push $there $src:$dst" rejects when $dst is not a fully
-   qualified refname and not clear what the end user meant.  The
+   qualified refname and it is not clear what the end user meant.  The
    codepath has been taught to give a clearer error message, and also
    guess where the push should go by taking the type of the pushed
    object into account (e.g. a tag object would want to go under
@@ -77,9 +77,9 @@
 
  * A new date format "--date=human" that morphs its output depending
    on how far the time is from the current time has been introduced.
-   "--date=auto" can be used to use this new format when the output is
-   going to the pager or to the terminal and otherwise the default
-   format.
+   "--date=auto:human" can be used to use this new format (or any
+   existing format) when the output is going to the pager or to the
+   terminal, and otherwise the default format.
 
 
 Performance, Internal Implementation, Development Support etc.
@@ -88,7 +88,7 @@
    (non-)existence of loose objects.
 
  * More codepaths have become aware of working with in-core repository
-   instance other than the default "the_repository".
+   instances other than the default "the_repository".
 
  * The "strncat()" function is now among the banned functions.
 
@@ -125,13 +125,13 @@
  * The in-core repository instances are passed through more codepaths.
 
  * Update the protocol message specification to allow only the limited
-   use of scaled quantities.  This is ensure potential compatibility
-   issues will not go out of hand.
+   use of scaled quantities.  This is to ensure potential compatibility
+   issues will not get out of hand.
 
  * Micro-optimize the code that prepares commit objects to be walked
    by "git rev-list" when the commit-graph is available.
 
- * "git fetch" and "git upload-pack" learned to send all exchange over
+ * "git fetch" and "git upload-pack" learned to send all exchanges over
    the sideband channel while talking the v2 protocol.
 
  * The codepath to write out commit-graph has been optimized by
diff --git a/imap-send.c b/imap-send.c
index 18ca6ba..6c54d8c 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -1114,7 +1114,7 @@
 
 			if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
 				if (!CAP(AUTH_CRAM_MD5)) {
-					fprintf(stderr, "You specified"
+					fprintf(stderr, "You specified "
 						"CRAM-MD5 as authentication method, "
 						"but %s doesn't support it.\n", srvc->host);
 					goto bail;
diff --git a/sequencer.c b/sequencer.c
index 972402e..0db410d 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -35,7 +35,7 @@
 
 #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
 
-const char sign_off_header[] = "Signed-off-by: ";
+static const char sign_off_header[] = "Signed-off-by: ";
 static const char cherry_picked_prefix[] = "(cherry picked from commit ";
 
 GIT_PATH_FUNC(git_path_commit_editmsg, "COMMIT_EDITMSG")
diff --git a/sequencer.h b/sequencer.h
index 93e8913..4d505b3 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -107,8 +107,6 @@
 		    unsigned autosquash);
 int rearrange_squash(struct repository *r);
 
-extern const char sign_off_header[];
-
 /*
  * Append a signoff to the commit message in "msgbuf". The ignore_footer
  * parameter specifies the number of bytes at the end of msgbuf that should