diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 652378d..c9dc0ef 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -1,4 +1,4 @@
-*usr_41.txt*	For Vim version 7.0.  Last change: 2007 Apr 26
+*usr_41.txt*	For Vim version 7.1a.  Last change: 2007 Apr 26
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -1482,7 +1482,9 @@
 	:execute cmd			|" do it
 
 With the '|' character the command is separated from the next one.  And that
-next command is only a comment.
+next command is only a comment.  For the last command you need to do two
+things: |:execute| and use '|': >
+	:exe '!ls *.c'			|" list C files
 
 Notice that there is no white space before the '|' in the abbreviation and
 mapping.  For these commands, any character until the end-of-line or '|' is
@@ -1491,9 +1493,19 @@
 
 	:map <F4> o#include  
 
-To avoid these problems, you can set the 'list' option when editing vimrc
+To spot these problems, you can set the 'list' option when editing vimrc
 files.
 
+For Unix there is one special way to comment a line, that allows making a Vim
+script executable: >
+	#!/usr/bin/env vim -S
+	echo "this is a Vim script"
+	quit
+
+The "#" command by itself lists a line with the line number.  Adding an
+exclamation mark changes it into doing nothing, so that you can add the shell
+command to execute the rest of the file. |:#!| |-S|
+
 
 PITFALLS
 
diff --git a/src/feature.h b/src/feature.h
index 9e99b91..00dd014 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -1257,4 +1257,3 @@
 	    || defined(FEAT_BIG)
 # define FEAT_AUTOCHDIR
 #endif
-
diff --git a/src/os_unix.c b/src/os_unix.c
index a188452..beeea3f 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -1256,9 +1256,11 @@
 
 /*
  * Handling of SIGHUP, SIGQUIT and SIGTERM:
- * "when" == a signal: when busy, postpone, otherwise return TRUE
- * "when" == SIGNAL_BLOCK: Going to be busy, block signals
- * "when" == SIGNAL_UNBLOCK: Going wait, unblock signals
+ * "when" == a signal:       when busy, postpone and return FALSE, otherwise
+ *			     return TRUE
+ * "when" == SIGNAL_BLOCK:   Going to be busy, block signals
+ * "when" == SIGNAL_UNBLOCK: Going to wait, unblock signals, use postponed
+ *                           signal
  * Returns TRUE when Vim should exit.
  */
     int
diff --git a/src/tag.c b/src/tag.c
index 66bcfcd..aa1ab75 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -1625,6 +1625,8 @@
 		eof = tag_fgets(lbuf, LSIZE, fp);
 		if (!eof && search_info.curr_offset != 0)
 		{
+		    /* The explicit cast is to work around a bug in gcc 3.4.2
+		     * (repeated below). */
 		    search_info.curr_offset = ftell(fp);
 		    if (search_info.curr_offset == search_info.high_offset)
 		    {