patch 9.0.0916: getbufline() is inefficient for getting a single line
Problem: getbufline() is inefficient for getting a single line.
Solution: Add getbufoneline().
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index ecbfeac..005f89c 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -1724,15 +1724,23 @@
getbufline(-1, '$', '$')->assert_equal([])
getbufline(-1, 1, '$')->assert_equal([])
+ getbufoneline('#', 1)->assert_equal(lines[0])
+
assert_equal([7, 7, 7], getbufline('#', 1, '$')->map((_, _) => 7))
assert_fails('getbufline("", "$a", "$b")', ['E1030: Using a String as a Number: "$a"', 'E1030: Using a String as a Number: "$a"'])
assert_fails('getbufline("", "$", "$b")', ['E1030: Using a String as a Number: "$b"', 'E1030: Using a String as a Number: "$b"'])
bwipe!
+ assert_fails('getbufoneline("", "$a")', ['E1030: Using a String as a Number: "$a"', 'E1030: Using a String as a Number: "$a"'])
+ bwipe!
+
v9.CheckDefAndScriptFailure(['getbufline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1220: String or Number required for argument 1'])
v9.CheckDefAndScriptFailure(['getbufline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1220: String or Number required for argument 2'])
v9.CheckDefAndScriptFailure(['getbufline("a", 2, 0z10)'], ['E1013: Argument 3: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 3'])
+
+ v9.CheckDefAndScriptFailure(['getbufoneline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1220: String or Number required for argument 1'])
+ v9.CheckDefAndScriptFailure(['getbufoneline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1220: String or Number required for argument 2'])
enddef
def Test_getbufvar()