From 2bd8a5e4b77367c29f3c9ed2091023dc69f35239 Mon Sep 17 00:00:00 2001
From: Josh Rahm <rahm@google.com>
Date: Wed, 20 Feb 2019 14:33:55 -0700
Subject: Add a colorcolumn character option.
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This option allows a character to be displayed in the colorcolumn. This
allows the colorcolumn ot have a traditional line if the colorcolumn
character is set to a vertical line '│' or even a series of dots for a
':'.

The option is a part of the 'listchars' setting under the name
'colorcol'. So 'set listchars=colorcol:│' will work.
---
 src/nvim/buffer_defs.h | 1 +
 src/nvim/eval/funcs.c  | 2 ++
 src/nvim/option.c      | 1 +
 src/nvim/screen.c      | 3 +++
 4 files changed, 7 insertions(+)

diff --git a/src/nvim/buffer_defs.h b/src/nvim/buffer_defs.h
index 5451f908cd..2db5a95304 100644
--- a/src/nvim/buffer_defs.h
+++ b/src/nvim/buffer_defs.h
@@ -1231,6 +1231,7 @@ struct window_S {
     int trail;
     int *multispace;
     int conceal;
+    int colorcol;
   } w_p_lcs_chars;
 
   // 'fillchars' characters. Defaults set in set_chars_option().
diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index e7fb6ed504..fa5a3eb67b 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -4457,6 +4457,8 @@ static void f_has(typval_T *argvars, typval_T *rettv, FunPtr fptr)
     "wsl",
 #endif
     "nvim",
+    "colorcolchar",
+    "omnihighlight",
   };
 
   bool n = false;
diff --git a/src/nvim/option.c b/src/nvim/option.c
index 4073ab08d9..f7c667dfb7 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -3474,6 +3474,7 @@ static char_u *set_chars_option(win_T *wp, char_u **varp, bool set)
     { &wp->w_p_lcs_chars.lead,    "lead",     NUL  },
     { &wp->w_p_lcs_chars.trail,   "trail",    NUL  },
     { &wp->w_p_lcs_chars.conceal, "conceal",  NUL  },
+    { &wp->w_p_lcs_chars.colorcol, "colorcol",  NUL  },
   };
 
   if (varp == &p_lcs || varp == &wp->w_p_lcs) {
diff --git a/src/nvim/screen.c b/src/nvim/screen.c
index 0a75e2d09f..155f706699 100644
--- a/src/nvim/screen.c
+++ b/src/nvim/screen.c
@@ -4141,6 +4141,9 @@ static int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, bool noc
             col_attr = cuc_attr;
           } else if (draw_color_col && VCOL_HLC == *color_cols) {
             col_attr = mc_attr;
+            // Draw the colorcolumn character.
+            c = wp->w_p_lcs_chars.colorcol;
+            schar_from_char(linebuf_char[off], c);
           }
 
           col_attr = hl_combine_attr(col_attr, line_attr);
-- 
cgit