From 0e71704b77a9891ccae9f5a9c7429e933078f232 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Mon, 27 Apr 2020 19:29:01 +0200
Subject: [PATCH] patch 8.2.0648: semicolon search does not work in first line

Problem:    Semicolon search does not work in first line.
Solution:   Allow the cursor to be in line zero. (Christian Brabandt,
            closes #5996)
---
 src/ex_docmd.c               |  6 ++++--
 src/testdir/test_cmdline.vim | 11 +++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 43cd013..ca69c29 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -3069,8 +3069,10 @@ parse_cmd_address(exarg_T *eap, char **errormsg, int silent)
 	    if (!eap->skip)
 	    {
 		curwin->w_cursor.lnum = eap->line2;
-		// don't leave the cursor on an illegal line or column
-		check_cursor();
+		// Don't leave the cursor on an illegal line or column, but do
+		// accept zero as address, so 0;/PATTERN/ works correctly.
+		if (eap->line2 > 0)
+		    check_cursor();
 	    }
 	}
 	else if (*eap->cmd != ',')
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 7d3c0c8..a547326 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -1471,4 +1471,15 @@ func Test_cmdwin_insert_mode_close()
   call assert_equal('yes', caught)
 endfunc
 
+" test that ";" works to find a match at the start of the first line
+func Test_zero_line_search()
+  new
+  call setline(1, ["1, pattern", "2, ", "3, pattern"])
+  call cursor(1,1)
+  0;/pattern/d
+  call assert_equal(["2, ", "3, pattern"], getline(1,'$'))
+  q!
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
-- 
1.8.3.1

