patch newline in log messages

Sometimes newline exits at the end of log messages. Sometimes not. This
is patch "svn log" to check of trailing newline and put newline at the
end only if it's needed.

-- 
Olleg Samoylov

Index: subversion/svn/log-cmd.c
===================================================================
--- subversion/svn/log-cmd.c (revision 18503)
+++ subversion/svn/log-cmd.c (working copy)
@@ -149,6 +149,10 @@
   /* Number of lines in the msg. */
   int lines;
 
+ /* Has msg trailig newline?
+ This is preferred, but old client may not put it. */
+ svn_boolean_t hasnt_trailing_newline;
+
   if (lb->cancel_func)
     SVN_ERR(lb->cancel_func(lb->cancel_baton));
 
@@ -179,9 +183,17 @@
                              SEP_STRING "r%ld | %s | %s",
                              rev, author, date));
 
+ /* check trailing newline */
+ int len=strlen(msg);
+ if (len>0)
+ hasnt_trailing_newline = 0==svn_cstring_count_newlines(msg+len-1);
+ else
+ hasnt_trailing_newline=FALSE;
   if (! lb->omit_log_message)
     {
- lines = svn_cstring_count_newlines(msg) + 1;
+ lines = svn_cstring_count_newlines(msg);
+ if (hasnt_trailing_newline)
+ ++lines;
       SVN_ERR(svn_cmdline_printf(pool,
                                  (lines != 1)
                                  ? " | %d lines"
@@ -228,7 +240,9 @@
   if (! lb->omit_log_message)
     {
       /* A blank line always precedes the log message. */
- SVN_ERR(svn_cmdline_printf(pool, "\n%s\n", msg));
+ SVN_ERR(svn_cmdline_printf(pool, "\n%s", msg));
+ if (hasnt_trailing_newline)
+ SVN_ERR(svn_cmdline_printf(pool, "\n"));
     }
 
   return SVN_NO_ERROR;