Add ‘eob’ option to fillchars

This option allows configuring what character is shown on the empty
lines at the end of a buffer, previously hardcoded to ‘~’

3 files changed, 5 insertions, 3 deletions

diff --git a/src/nvim/globals.h b/src/nvim/globals.h
index 20e5353b51..f5ebaa9753 100644
--- a/src/nvim/globals.h
+++ b/src/nvim/globals.h
@@ -908,6 +908,7 @@ EXTERN int fill_vert INIT(= 9474);  // │
 EXTERN int fill_fold INIT(= 183);   // ·
 EXTERN int fill_diff INIT(= '-');
 EXTERN int fill_msgsep INIT(= ' ');
+EXTERN int fill_eob INIT(= '~');
 
 /* Whether 'keymodel' contains "stopsel" and "startsel". */
 EXTERN int km_stopsel INIT(= FALSE);
diff --git a/src/nvim/option.c b/src/nvim/option.c
index a7ee0ef28b..3c1a70e90d 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -3386,6 +3386,7 @@ static char_u *set_chars_option(char_u **varp)
     { &fill_fold,    "fold" , 183  },  // ·
     { &fill_diff,    "diff" , '-'  },
     { &fill_msgsep,  "msgsep", ' ' },
+    { &fill_eob,     "eob",   '~' },
   };
   static struct charstab lcstab[] = {
     { &lcs_eol,      "eol",      NUL },
diff --git a/src/nvim/screen.c b/src/nvim/screen.c
index cf9a72715b..80f7a32c07 100644
--- a/src/nvim/screen.c
+++ b/src/nvim/screen.c
@@ -1532,9 +1532,9 @@ static void win_update(win_T *wp)
     } else if (dollar_vcol == -1)
       wp->w_botline = lnum;
 
-    /* make sure the rest of the screen is blank */
-    /* put '~'s on rows that aren't part of the file. */
-    win_draw_end(wp, '~', ' ', row, wp->w_height, HLF_EOB);
+    // make sure the rest of the screen is blank
+    // write the 'fill_eob' character to rows that aren't part of the file.
+    win_draw_end(wp, fill_eob, ' ', row, wp->w_height, HLF_EOB);
   }
 
   /* Reset the type of redrawing required, the window has been updated. */