patch 8.0.1093: various small quickfix issues

Problem:    Various small quickfix issues.
Solution:   Remove ":" prefix from title set by a user. Add the qf_id2nr().
            function. Add a couple more tests.  Update documentation.
            (Yegappan Lakshmanan)

7 files changed, 90 insertions, 32 deletions

diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index af43bf28f..eb4eba0c6 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.0.  Last change: 2017 Aug 13
+*eval.txt*	For Vim version 8.0.  Last change: 2017 Sep 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1449,7 +1449,7 @@ v:beval_text	The text under or after the mouse pointer.  Usually a word as
 		but a dot and "->" before the position is included.  When on a
 		']' the text before it is used, including the matching '[' and
 		word before it.  When on a Visual area within one line the
-		highlighted text is used.
+		highlighted text is used.  Also see |<cexpr>|.
 		Only valid while evaluating the 'balloonexpr' option.
 
 					*v:beval_winnr* *beval_winnr-variable*
@@ -3301,7 +3301,7 @@ count({comp}, {expr} [, {ic} [, {start}]])			*count()*
 		When {ic} is given and it's |TRUE| then case is ignored.
 
 		When {comp} is a string then the number of not overlapping
-		occurences of {expr} is returned.
+		occurrences of {expr} is returned.
 
 
 							*cscope_connection()*
@@ -3467,7 +3467,7 @@ escape({string}, {chars})				*escape()*
 			:echo escape('c:\program files\vim', ' \')
 <		results in: >
 			c:\\program\ files\\vim
-<		Also see |shellescape()|.
+<		Also see |shellescape()| and |fnameescape()|.
 
 							*eval()*
 eval({string})	Evaluate {string} and return the result.  Especially useful to
@@ -3887,7 +3887,7 @@ float2nr({expr})					*float2nr()*
 		When the value of {expr} is out of range for a |Number| the
 		result is truncated to 0x7fffffff or -0x7fffffff (or when
 		64-bit Number support is enabled, 0x7fffffffffffffff or
-		-0x7fffffffffffffff.  NaN results in -0x80000000 (or when
+		-0x7fffffffffffffff).  NaN results in -0x80000000 (or when
 		64-bit Number support is enabled, -0x8000000000000000).
 		Examples: >
 			echo float2nr(3.95)
@@ -4657,12 +4657,12 @@ getqflist([{what}])					*getqflist()*
 		If "nr" is not present then the current quickfix list is used.
 		If both "nr" and a non-zero "id" are specified, then the list
 		specified by "id" is used.
-		To get the number of lists in the quickfix stack, set 'nr' to
-		'$' in {what}. The 'nr' value in the returned dictionary
+		To get the number of lists in the quickfix stack, set "nr" to
+		"$" in {what}. The "nr" value in the returned dictionary
 		contains the quickfix stack size.
-		When 'text' is specified, all the other items are ignored. The
-		returned dictionary contains the entry 'items' with the list
-		of entries.
+		When "lines" is specified, all the other items except "efm"
+		are ignored.  The returned dictionary contains the entry
+		"items" with the list of entries.
 		In case of error processing {what}, an empty dictionary is
 		returned.
 
@@ -6967,6 +6967,7 @@ setline({lnum}, {text})					*setline()*
 			:for [n, l] in [[5, 'aaa'], [6, 'bbb'], [7, 'ccc']]
 			:  call setline(n, l)
 			:endfor
+
 <		Note: The '[ and '] marks are not set.
 
 setloclist({nr}, {list}[, {action}[, {what}]])		*setloclist()*
@@ -7164,16 +7165,17 @@ setreg({regname}, {value} [, {options}])
 			:call setreg('a', "1\n2\n3", 'b5')
 
 <		This example shows using the functions to save and restore a
-		register (note: you may not reliably restore register value 
-		without using the third argument to |getreg()| as without it 
-		newlines are represented as newlines AND Nul bytes are 
-		represented as newlines as well, see |NL-used-for-Nul|). >
+		register: >
 			:let var_a = getreg('a', 1, 1)
 			:let var_amode = getregtype('a')
 			    ....
 			:call setreg('a', var_a, var_amode)
+<		Note: you may not reliably restore register value 
+		without using the third argument to |getreg()| as without it 
+		newlines are represented as newlines AND Nul bytes are
+		represented as newlines as well, see |NL-used-for-Nul|.
 
-<		You can also change the type of a register by appending
+		You can also change the type of a register by appending
 		nothing: >
 			:call setreg('a', '', 'al')
 
@@ -8145,7 +8147,7 @@ term_start({cmd}, {options})				*term_start()*
 		are supported:
 		   all timeout options
 		   "stoponexit"
-		   "out_cb", "err_cb"
+		   "callback", "out_cb", "err_cb"
 		   "exit_cb", "close_cb"
 		   "in_io", "in_top", "in_bot", "in_name", "in_buf"
 		   "out_io", "out_name", "out_buf", "out_modifiable", "out_msg"
@@ -8165,6 +8167,7 @@ term_start({cmd}, {options})				*term_start()*
 		   "curwin"	     use the current window, do not split the
 				     window; fails if the current buffer
 				     cannot be |abandon|ed
+		   "hidden"	     do not open a window
 		   "term_finish"     What to do when the job is finished:
 					"close": close any windows
 					"open": open window if needed
@@ -8562,7 +8565,7 @@ win_getid([{win} [, {tab}]])				*win_getid()*
 		Get the |window-ID| for the specified window.
 		When {win} is missing use the current window.
 		With {win} this is the window number.  The top window has
-		number 1.
+		number 1.  Use `win_getid(winnr())` for the current window.
 		Without {tab} use the current tab, otherwise the tab with
 		number {tab}.  The first tab has number one.
 		Return zero if the window cannot be found.
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index e555451b5..753f46126 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -44,6 +44,18 @@ From inside Vim an easy way to run a command and handle the output is with the
 The 'errorformat' option should be set to match the error messages from your
 compiler (see |errorformat| below).
 
+							*quickfix-ID*
+Each quickfix list has a unique identifier called the quickfix ID and this
+number will not change within a Vim session. The getqflist() function can be
+used to get the identifier assigned to a list.
+
+							*quickfix-ID*
+Each quickfix list has a unique identifier called the quickfix ID and this
+number will not change within a Vim session. The getqflist() function can be
+used to get the identifier assigned to a list. There is also a quickfix list
+number which may change whenever more than ten lists are added to a quickfix
+stack.
+
 						*location-list* *E776*
 A location list is a window-local quickfix list. You get one after commands
 like `:lvimgrep`, `:lgrep`, `:lhelpgrep`, `:lmake`, etc., which create a
diff --git a/src/evalfunc.c b/src/evalfunc.c
index ea342b4c6..4a6332b13 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -4826,7 +4826,7 @@ get_qf_loc_list(int is_qf, win_T *wp, typval_T *what_arg, typval_T *rettv)
 		    dict_T	*d = what_arg->vval.v_dict;
 
 		    if (d != NULL)
-			get_errorlist_properties(wp, d, rettv->vval.v_dict);
+			qf_get_properties(wp, d, rettv->vval.v_dict);
 		}
 		else
 		    EMSG(_(e_dictreq));
diff --git a/src/proto/quickfix.pro b/src/proto/quickfix.pro
index ad6ad3433..a801edd0e 100644
--- a/src/proto/quickfix.pro
+++ b/src/proto/quickfix.pro
@@ -22,7 +22,7 @@ void ex_cnext(exarg_T *eap);
 void ex_cfile(exarg_T *eap);
 void ex_vimgrep(exarg_T *eap);
 int get_errorlist(qf_info_T *qi, win_T *wp, int qf_idx, list_T *list);
-int get_errorlist_properties(win_T *wp, dict_T *what, dict_T *retdict);
+int qf_get_properties(win_T *wp, dict_T *what, dict_T *retdict);
 int set_errorlist(win_T *wp, list_T *list, int action, char_u *title, dict_T *what);
 int set_ref_in_quickfix(int copyID);
 void ex_cbuffer(exarg_T *eap);
diff --git a/src/quickfix.c b/src/quickfix.c
index ee871fc46..096790317 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -4691,12 +4691,27 @@ qf_get_list_from_lines(dict_T *what, dictitem_T *di, dict_T *retdict)
 }
 
 /*
+ * Return the quickfix/location list number with the given identifier.
+ * Returns -1 if list is not found.
+ */
+    static int
+qf_id2nr(qf_info_T *qi, int_u qfid)
+{
+    int		qf_idx;
+
+    for (qf_idx = 0; qf_idx < qi->qf_listcount; qf_idx++)
+	if (qi->qf_lists[qf_idx].qf_id == qfid)
+	    return qf_idx;
+    return -1;
+}
+
+/*
  * Return quickfix/location list details (title) as a
  * dictionary. 'what' contains the details to return. If 'list_idx' is -1,
  * then current list is used. Otherwise the specified list is used.
  */
     int
-get_errorlist_properties(win_T *wp, dict_T *what, dict_T *retdict)
+qf_get_properties(win_T *wp, dict_T *what, dict_T *retdict)
 {
     qf_info_T	*qi = &ql_info;
     int		status = OK;
@@ -4752,12 +4767,8 @@ get_errorlist_properties(win_T *wp, dict_T *what, dict_T *retdict)
 	    /* For zero, use the current list or the list specifed by 'nr' */
 	    if (di->di_tv.vval.v_number != 0)
 	    {
-		for (qf_idx = 0; qf_idx < qi->qf_listcount; qf_idx++)
-		{
-		    if (qi->qf_lists[qf_idx].qf_id == di->di_tv.vval.v_number)
-			break;
-		}
-		if (qf_idx == qi->qf_listcount)
+		qf_idx = qf_id2nr(qi, di->di_tv.vval.v_number);
+		if (qf_idx == -1)
 		    return FAIL;	    /* List not found */
 	    }
 	    flags |= QF_GETLIST_ID;
@@ -5024,10 +5035,8 @@ qf_set_properties(qf_info_T *qi, dict_T *what, int action, char_u *title)
 	/* Use the quickfix/location list with the specified id */
 	if (di->di_tv.v_type == VAR_NUMBER)
 	{
-	    for (qf_idx = 0; qf_idx < qi->qf_listcount; qf_idx++)
-		if (qi->qf_lists[qf_idx].qf_id == di->di_tv.vval.v_number)
-		    break;
-	    if (qf_idx == qi->qf_listcount)
+	    qf_idx = qf_id2nr(qi, di->di_tv.vval.v_number);
+	    if (qf_idx == -1)
 		return FAIL;	    /* List not found */
 	}
 	else
@@ -5062,6 +5071,16 @@ qf_set_properties(qf_info_T *qi, dict_T *what, int action, char_u *title)
 
 	    retval = qf_add_entries(qi, qf_idx, di->di_tv.vval.v_list,
 		    title_save, action == ' ' ? 'a' : action);
+	    if (action == 'r')
+	    {
+		/*
+		 * When replacing the quickfix list entries using
+		 * qf_add_entries(), the title is set with a ':' prefix.
+		 * Restore the title with the saved title.
+		 */
+		vim_free(qi->qf_lists[qf_idx].qf_title);
+		qi->qf_lists[qf_idx].qf_title = vim_strsave(title_save);
+	    }
 	    vim_free(title_save);
 	}
     }
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 6a8d0e7bf..671381ce1 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -487,6 +487,19 @@ func s:test_xhelpgrep(cchar)
   " This wipes out the buffer, make sure that doesn't cause trouble.
   Xclose
 
+  if a:cchar == 'l'
+      " When a help window is present, running :lhelpgrep should reuse the
+      " help window and not the current window
+      new | only
+      call g:Xsetlist([], 'f')
+      help index.txt
+      wincmd w
+      lhelpgrep quickfix
+      call assert_equal(1, winnr())
+      call assert_notequal([], getloclist(1))
+      call assert_equal([], getloclist(2))
+  endif
+
   new | only
 
   " Search for non existing help string
@@ -1684,6 +1697,10 @@ func HistoryTest(cchar)
   call assert_equal('  error list 1 of 3; 1 ' . common, res[0])
   call assert_equal('  error list 2 of 3; 2 ' . common, res[1])
   call assert_equal('> error list 3 of 3; 3 ' . common, res[2])
+
+  call g:Xsetlist([], 'f')
+  let l = split(execute(a:cchar . 'hist'), "\n")
+  call assert_equal('No entries', l[0])
 endfunc
 
 func Test_history()
@@ -1862,6 +1879,11 @@ func Xproperty_tests(cchar)
     let l = g:Xgetlist({'items':1})
     call assert_equal(0, len(l.items))
 
+    call g:Xsetlist([], 'r', {'title' : 'TestTitle'})
+    call g:Xsetlist([], 'r', {'items' : [{'filename' : 'F1', 'lnum' : 10, 'text' : 'L10'}]})
+    call g:Xsetlist([], 'r', {'items' : [{'filename' : 'F1', 'lnum' : 10, 'text' : 'L10'}]})
+    call assert_equal('TestTitle', g:Xgetlist({'title' : 1}).title)
+
     " The following used to crash Vim with address sanitizer
     call g:Xsetlist([], 'f')
     call g:Xsetlist([], 'a', {'items' : [{'filename':'F1', 'lnum':10}]})
@@ -1904,10 +1926,10 @@ func Xproperty_tests(cchar)
     call g:Xsetlist([], 'r', l2)
     let newl1=g:Xgetlist({'nr':1,'all':1})
     let newl2=g:Xgetlist({'nr':2,'all':1})
-    call assert_equal(':Fruits', newl1.title)
+    call assert_equal('Fruits', newl1.title)
     call assert_equal(['Fruits'], newl1.context)
     call assert_equal('Line20', newl1.items[0].text)
-    call assert_equal(':Colors', newl2.title)
+    call assert_equal('Colors', newl2.title)
     call assert_equal(['Colors'], newl2.context)
     call assert_equal('Line10', newl2.items[0].text)
     call g:Xsetlist([], 'f')
diff --git a/src/version.c b/src/version.c
index a483bb7d6..88849e995 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1093,
+/**/
     1092,
 /**/
     1091,