patch 8.1.2125: fnamemodify() fails when repeating :e
Problem: Fnamemodify() fails when repeating :e.
Solution: Do not go before the tail. (Rob Pilling, closes #5024)
diff --git a/src/testdir/test_fnamemodify.vim b/src/testdir/test_fnamemodify.vim
index fd5f1ef..a8324ab 100644
--- a/src/testdir/test_fnamemodify.vim
+++ b/src/testdir/test_fnamemodify.vim
@@ -45,3 +45,31 @@
let $HOME = save_home
let &shell = save_shell
endfunc
+
+func Test_fnamemodify_er()
+ call assert_equal("with", fnamemodify("path/to/file.with.extensions", ':e:e:r:r'))
+
+ call assert_equal('c', fnamemodify('a.c', ':e'))
+ call assert_equal('c', fnamemodify('a.c', ':e:e'))
+ call assert_equal('c', fnamemodify('a.c', ':e:e:r'))
+ call assert_equal('c', fnamemodify('a.c', ':e:e:r:r'))
+
+ call assert_equal('rb', fnamemodify('a.spec.rb', ':e:r'))
+ call assert_equal('rb', fnamemodify('a.spec.rb', ':e:r'))
+ call assert_equal('spec.rb', fnamemodify('a.spec.rb', ':e:e'))
+ call assert_equal('spec', fnamemodify('a.spec.rb', ':e:e:r'))
+ call assert_equal('spec', fnamemodify('a.spec.rb', ':e:e:r:r'))
+ call assert_equal('spec', fnamemodify('a.b.spec.rb', ':e:e:r'))
+ call assert_equal('b.spec', fnamemodify('a.b.spec.rb', ':e:e:e:r'))
+ call assert_equal('b', fnamemodify('a.b.spec.rb', ':e:e:e:r:r'))
+
+ call assert_equal('spec', fnamemodify('a.b.spec.rb', ':r:e'))
+ call assert_equal('b', fnamemodify('a.b.spec.rb', ':r:r:e'))
+
+ call assert_equal('c', fnamemodify('a.b.c.d.e', ':r:r:e'))
+ call assert_equal('b.c', fnamemodify('a.b.c.d.e', ':r:r:e:e'))
+
+ " :e never includes the whole filename, so "a.b":e:e:e --> "b"
+ call assert_equal('b.c', fnamemodify('a.b.c.d.e', ':r:r:e:e:e'))
+ call assert_equal('b.c', fnamemodify('a.b.c.d.e', ':r:r:e:e:e:e'))
+endfunc