commit 385111bd86e0b38667879c3e89506ca1ae98e1df
author Bram Moolenaar <Bram@vim.org> Sat Mar 12 19:23:00 2016 +0100
committer Bram Moolenaar <Bram@vim.org> Sat Mar 12 19:23:00 2016 +0100
tree 5f1c3d68cd38bed97cec68adb2e61e4415d81f2b
parent f6f32c38bf3319144a84a01a154c8c91939e7acf

patch 7.4.1547
Problem:    Getting a cterm highlight attribute that is not set results in the
            string "-1".
Solution:   Return an empty string. (Taro Muraoka)

src/testdir/test_alot.vim

diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index 6071756..a1d819d 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -16,5 +16,6 @@
 source test_searchpos.vim
 source test_set.vim
 source test_sort.vim
+source test_syn_attr.vim
 source test_undolevels.vim
 source test_unlet.vim

src/testdir/test_syn_attr.vim

diff --git a/src/testdir/test_syn_attr.vim b/src/testdir/test_syn_attr.vim
new file mode 100644
index 0000000..20e9b17
--- /dev/null
+++ b/src/testdir/test_syn_attr.vim
@@ -0,0 +1,31 @@
+" Test syntax highlighting functions.
+
+func Test_missing_attr()
+  hi Mine term=bold cterm=italic
+  call assert_equal('Mine', synIDattr(hlID("Mine"), "name"))
+  call assert_equal('', synIDattr(hlID("Mine"), "bg", 'term'))
+  call assert_equal('1', synIDattr(hlID("Mine"), "bold", 'term'))
+  call assert_equal('1', synIDattr(hlID("Mine"), "italic", 'cterm'))
+  hi Mine term=reverse cterm=inverse
+  call assert_equal('1', synIDattr(hlID("Mine"), "reverse", 'term'))
+  call assert_equal('1', synIDattr(hlID("Mine"), "inverse", 'cterm'))
+  hi Mine term=underline cterm=standout gui=undercurl
+  call assert_equal('1', synIDattr(hlID("Mine"), "underline", 'term'))
+  call assert_equal('1', synIDattr(hlID("Mine"), "standout", 'cterm'))
+  call assert_equal('1', synIDattr(hlID("Mine"), "undercurl", 'gui'))
+  hi Mine term=NONE cterm=NONE gui=NONE
+  call assert_equal('', synIDattr(hlID("Mine"), "bold", 'term'))
+  call assert_equal('', synIDattr(hlID("Mine"), "italic", 'cterm'))
+  call assert_equal('', synIDattr(hlID("Mine"), "reverse", 'term'))
+  call assert_equal('', synIDattr(hlID("Mine"), "inverse", 'cterm'))
+  call assert_equal('', synIDattr(hlID("Mine"), "underline", 'term'))
+  call assert_equal('', synIDattr(hlID("Mine"), "standout", 'cterm'))
+  call assert_equal('', synIDattr(hlID("Mine"), "undercurl", 'gui'))
+
+  if has('gui')
+    hi Mine guifg=blue guibg=red font=something
+    call assert_equal('blue', synIDattr(hlID("Mine"), "fg", 'gui'))
+    call assert_equal('red', synIDattr(hlID("Mine"), "bg", 'gui'))
+    call assert_equal('something', synIDattr(hlID("Mine"), "font", 'gui'))
+  endif
+endfunc