patch 8.1.1270: cannot see current match position

Problem:    Cannot see current match position.
Solution:   Show "3/44" when using the "n" command and "S" is not in
            'shortmess'. (Christian Brabandt, closes #4317)

runtime/doc/options.txt

@@ -1789,7 +1789,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	'scrolloff'	+ 0		no scroll offset
 	'shelltemp'	- {unchanged}	{set vim default only on resetting 'cp'}
 	'shiftround'	+ off		indent not rounded to shiftwidth
-	'shortmess'	& ""		no shortening of messages
+	'shortmess'	& "S"		no shortening of messages
 	'showcmd'	& off		command characters not shown
 	'showmode'	& off		current mode not shown
 	'sidescrolloff'	+ 0		cursor moves to edge of screen in scroll
@@ -6563,8 +6563,8 @@ A jump table for the options with a short description can be found at |Q_op|.
 	function to get the effective shiftwidth value.
 
 						*'shortmess'* *'shm'*
-'shortmess' 'shm'	string	(Vim default "filnxtToO", Vi default: "",
-							POSIX default: "A")
+'shortmess' 'shm'	string	(Vim default "filnxtToOS", Vi default: "S",
+							POSIX default: "AS")
 			global
 	This option helps to avoid all the |hit-enter| prompts caused by file
 	messages, for example  with CTRL-G, and to avoid some other messages.
@@ -6604,6 +6604,8 @@ A jump table for the options with a short description can be found at |Q_op|.
 	  q	use "recording" instead of "recording @a"
 	  F	don't give the file info when editing a file, like `:silent`
 		was used for the command
+	  S     do not show search count message when searching, e.g.
+	        "[1/5]"
 
 	This gives you the opportunity to avoid that a change between buffers
 	requires you to hit <Enter>, but still gives as useful a message as

runtime/doc/pattern.txt

@@ -152,6 +152,17 @@ use <Esc> to abandon the search.
 All matches for the last used search pattern will be highlighted if you set
 the 'hlsearch' option.  This can be suspended with the |:nohlsearch| command.
 
+When 'shortmess' does not include the "S" flag, Vim will automatically show an
+index, on which the cursor is. This can look like this: >
+
+  [1/5]		Cursor is on first of 5 matches.
+  [1/>99]	Cursor is on first of more than 99 matches.
+  [>99/>99]	Cursor is after 99 match of more than 99 matches.
+  [?/??]	Unknown how many matches exists, generating the
+		statistics was aborted because of search timeout.
+
+Note: the count does not take offset into account.
+
 When no match is found you get the error: *E486* Pattern not found
 Note that for the |:global| command this behaves like a normal message, for Vi
 compatibility.  For the |:s| command the "e" flag can be used to avoid the
@@ -299,6 +310,14 @@ when executing a pattern takes a long time and when checking for messages on
 channels a callback is invoked that also uses a pattern or an autocommand is
 triggered.  In most cases this should be fine, but if a pattern is in use when
 it's used again it fails.  Usually this means there is something wrong with
+the pattern.
+
+								*E956*
+In very rare cases a regular expression is used recursively.  This can happen
+when executing a pattern takes a long time and when checking for messages on
+channels a callback is invoked that also uses a pattern or an autocommand is
+triggered.  In most cases this should be fine, but if a pattern is in use when
+it's used again it fails.  Usually this means there is something wrong with
 the pattern.
 
 ==============================================================================

src/option.c

@@ -2449,7 +2449,7 @@ static struct vimoption options[] =
 			    {(char_u *)8L, (char_u *)0L} SCTX_INIT},
     {"shortmess",   "shm",  P_STRING|P_VIM|P_FLAGLIST,
 			    (char_u *)&p_shm, PV_NONE,
-			    {(char_u *)"", (char_u *)"filnxtToO"}
+			    {(char_u *)"S", (char_u *)"filnxtToOS"}
 			    SCTX_INIT},
     {"shortname",   "sn",   P_BOOL|P_VI_DEF,
 			    (char_u *)&p_sn, PV_SN,
@@ -3311,7 +3311,7 @@ set_init_1(int clean_arg)
     if (mch_getenv((char_u *)"VIM_POSIX") != NULL)
     {
 	set_string_default("cpo", (char_u *)CPO_ALL);
-	set_string_default("shm", (char_u *)"A");
+	set_string_default("shm", (char_u *)SHM_POSIX);
     }
 
     /*

src/option.h

@@ -183,27 +183,29 @@
 #define COCU_ALL	"nvic"		/* flags for 'concealcursor' */
 
 /* characters for p_shm option: */
-#define SHM_RO		'r'		/* readonly */
-#define SHM_MOD		'm'		/* modified */
-#define SHM_FILE	'f'		/* (file 1 of 2) */
-#define SHM_LAST	'i'		/* last line incomplete */
-#define SHM_TEXT	'x'		/* tx instead of textmode */
-#define SHM_LINES	'l'		/* "L" instead of "lines" */
-#define SHM_NEW		'n'		/* "[New]" instead of "[New file]" */
-#define SHM_WRI		'w'		/* "[w]" instead of "written" */
-#define SHM_A		"rmfixlnw"	/* represented by 'a' flag */
-#define SHM_WRITE	'W'		/* don't use "written" at all */
-#define SHM_TRUNC	't'		/* truncate file messages */
-#define SHM_TRUNCALL	'T'		/* truncate all messages */
-#define SHM_OVER	'o'		/* overwrite file messages */
-#define SHM_OVERALL	'O'		/* overwrite more messages */
-#define SHM_SEARCH	's'		/* no search hit bottom messages */
-#define SHM_ATTENTION	'A'		/* no ATTENTION messages */
-#define SHM_INTRO	'I'		/* intro messages */
-#define SHM_COMPLETIONMENU  'c'		/* completion menu messages */
-#define SHM_RECORDING	'q'		/* short recording message */
-#define SHM_FILEINFO	'F'		/* no file info messages */
-#define SHM_ALL		"rmfixlnwaWtToOsAIcqF" /* all possible flags for 'shm' */
+#define SHM_RO		'r'		// readonly
+#define SHM_MOD		'm'		// modified
+#define SHM_FILE	'f'		// (file 1 of 2)
+#define SHM_LAST	'i'		// last line incomplete
+#define SHM_TEXT	'x'		// tx instead of textmode
+#define SHM_LINES	'l'		// "L" instead of "lines"
+#define SHM_NEW		'n'		// "[New]" instead of "[New file]"
+#define SHM_WRI		'w'		// "[w]" instead of "written"
+#define SHM_A		"rmfixlnw"	// represented by 'a' flag
+#define SHM_WRITE	'W'		// don't use "written" at all
+#define SHM_TRUNC	't'		// truncate file messages
+#define SHM_TRUNCALL	'T'		// truncate all messages
+#define SHM_OVER	'o'		// overwrite file messages
+#define SHM_OVERALL	'O'		// overwrite more messages
+#define SHM_SEARCH	's'		// no search hit bottom messages
+#define SHM_ATTENTION	'A'		// no ATTENTION messages
+#define SHM_INTRO	'I'		// intro messages
+#define SHM_COMPLETIONMENU  'c'		// completion menu messages
+#define SHM_RECORDING	'q'		// short recording message
+#define SHM_FILEINFO	'F'		// no file info messages
+#define SHM_SEARCHCOUNT  'S'	        // search stats: '[1/10]'
+#define SHM_POSIX       "AS"            // POSIX value
+#define SHM_ALL		"rmfixlnwaWtToOsAIcqFS" // all possible flags for 'shm'
 
 /* characters for p_go: */
 #define GO_TERMINAL	'!'		/* use terminal for system commands */