patch 8.1.1614: 'numberwidth' can only go up to 10

Problem:    'numberwidth' can only go up to 10.
Solution:   Allow up to 20. (Charlie Stanton, closes #4584)

runtime/doc/options.txt

@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 8.1.  Last change: 2019 Jun 22
+*options.txt*	For Vim version 8.1.  Last change: 2019 Jun 27
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -5385,7 +5385,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	rows in the window, depending on whether 'number' or 'relativenumber'
 	is set. Thus with the Vim default of 4 there is room for a line number
 	up to 999. When the buffer has 1000 lines five columns will be used.
-	The minimum value is 1, the maximum value is 10.
+	The minimum value is 1, the maximum value is 20.
 	NOTE: This option is set to the Vi default value when 'compatible' is
 	set and to the Vim default value when 'compatible' is reset.
 
@@ -8070,7 +8070,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	already.
 	Additionally, if vim is compiled with the |+termresponse| feature and
 	|t_RV| is set to the escape sequence to request the xterm version
-	number, more intelligent detection process runs.
+	number, more intelligent detection is done.
 	The "xterm2" value will be set if the xterm version is reported to be
 	from 95 to 276.  The "sgr" value will be set if Vim detects Mac
 	Terminal.app, iTerm2 or mintty, and when the xterm version is 277 or

src/option.c

@@ -9493,10 +9493,10 @@ set_num_option(
 	    errmsg = e_positive;
 	    curwin->w_p_nuw = 1;
 	}
-	if (curwin->w_p_nuw > 10)
+	if (curwin->w_p_nuw > 20)
 	{
 	    errmsg = e_invarg;
-	    curwin->w_p_nuw = 10;
+	    curwin->w_p_nuw = 20;
 	}
 	curwin->w_nrwidth_line_count = 0; /* trigger a redraw */
     }

src/screen.c

@@ -3149,32 +3149,32 @@ win_line(
     int		nochange UNUSED,	// not updating for changed text
     int		number_only)		// only update the number column
 {
-    int		col = 0;		/* visual column on screen */
-    unsigned	off;			/* offset in ScreenLines/ScreenAttrs */
-    int		c = 0;			/* init for GCC */
-    long	vcol = 0;		/* virtual column (for tabs) */
+    int		col = 0;		// visual column on screen
+    unsigned	off;			// offset in ScreenLines/ScreenAttrs
+    int		c = 0;			// init for GCC
+    long	vcol = 0;		// virtual column (for tabs)
 #ifdef FEAT_LINEBREAK
-    long	vcol_sbr = -1;		/* virtual column after showbreak */
-#endif
-    long	vcol_prev = -1;		/* "vcol" of previous character */
-    char_u	*line;			/* current line */
-    char_u	*ptr;			/* current position in "line" */
-    int		row;			/* row in the window, excl w_winrow */
-    int		screen_row;		/* row on the screen, incl w_winrow */
-
-    char_u	extra[20];		/* "%ld" and 'fdc' must fit in here */
-    int		n_extra = 0;		/* number of extra chars */
-    char_u	*p_extra = NULL;	/* string of extra chars, plus NUL */
-    char_u	*p_extra_free = NULL;   /* p_extra needs to be freed */
-    int		c_extra = NUL;		/* extra chars, all the same */
-    int		c_final = NUL;		/* final char, mandatory if set */
-    int		extra_attr = 0;		/* attributes when n_extra != 0 */
-    static char_u *at_end_str = (char_u *)""; /* used for p_extra when
-					   displaying lcs_eol at end-of-line */
-    int		lcs_eol_one = lcs_eol;	/* lcs_eol until it's been used */
-    int		lcs_prec_todo = lcs_prec;   /* lcs_prec until it's been used */
-
-    /* saved "extra" items for when draw_state becomes WL_LINE (again) */
+    long	vcol_sbr = -1;		// virtual column after showbreak
+#endif
+    long	vcol_prev = -1;		// "vcol" of previous character
+    char_u	*line;			// current line
+    char_u	*ptr;			// current position in "line"
+    int		row;			// row in the window, excl w_winrow
+    int		screen_row;		// row on the screen, incl w_winrow
+
+    char_u	extra[21];		// "%ld " and 'fdc' must fit in here
+    int		n_extra = 0;		// number of extra chars
+    char_u	*p_extra = NULL;	// string of extra chars, plus NUL
+    char_u	*p_extra_free = NULL;   // p_extra needs to be freed
+    int		c_extra = NUL;		// extra chars, all the same
+    int		c_final = NUL;		// final char, mandatory if set
+    int		extra_attr = 0;		// attributes when n_extra != 0
+    static char_u *at_end_str = (char_u *)""; // used for p_extra when
+					   // displaying lcs_eol at end-of-line
+    int		lcs_eol_one = lcs_eol;	// lcs_eol until it's been used
+    int		lcs_prec_todo = lcs_prec;   // lcs_prec until it's been used
+
+    // saved "extra" items for when draw_state becomes WL_LINE (again)
     int		saved_n_extra = 0;
     char_u	*saved_p_extra = NULL;
     int		saved_c_extra = 0;

src/testdir/gen_opt_test.vim

@@ -37,7 +37,7 @@ let test_values = {
       \ 'imstyle': [[0, 1], [-1, 2, 999]],
       \ 'lines': [[2, 24], [-1, 0, 1]],
       \ 'linespace': [[0, 2, 4], ['']],
-      \ 'numberwidth': [[1, 4, 8, 10], [-1, 0, 11]],
+      \ 'numberwidth': [[1, 4, 8, 10, 11, 20], [-1, 0, 21]],
       \ 'regexpengine': [[0, 1, 2], [-1, 3, 999]],
       \ 'report': [[0, 1, 2, 9999], [-1]],
       \ 'scroll': [[0, 1, 2, 20], [-1]],

src/testdir/test_options.vim

@@ -245,7 +245,7 @@ func Test_set_errors()
   call assert_fails('set backupcopy=', 'E474:')
   call assert_fails('set regexpengine=3', 'E474:')
   call assert_fails('set history=10001', 'E474:')
-  call assert_fails('set numberwidth=11', 'E474:')
+  call assert_fails('set numberwidth=21', 'E474:')
   call assert_fails('set colorcolumn=-a')
   call assert_fails('set colorcolumn=a')
   call assert_fails('set colorcolumn=1,')

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1614,
 /**/
     1613,
 /**/