patch 8.2.4607: sourcing buffer lines may lead to errors for conflicts
Problem: Sourcing buffer lines may lead to errors for conflicts.
Solution: Add the ++clear argument. (Yegappan Lakshmanan, closes #9991)
diff --git a/src/testdir/test_source.vim b/src/testdir/test_source.vim
index 251625a..0104010 100644
--- a/src/testdir/test_source.vim
+++ b/src/testdir/test_source.vim
@@ -608,6 +608,34 @@
source
call assert_equal('red', g:Color)
+ " test for ++clear argument to clear all the functions/variables
+ %d _
+ let lines =<< trim END
+ g:ScriptVarFound = exists("color")
+ g:MyFuncFound = exists('*Myfunc')
+ if g:MyFuncFound
+ finish
+ endif
+ var color = 'blue'
+ def Myfunc()
+ enddef
+ END
+ call setline(1, lines)
+ vim9cmd source
+ call assert_false(g:MyFuncFound)
+ call assert_false(g:ScriptVarFound)
+ vim9cmd source
+ call assert_true(g:MyFuncFound)
+ call assert_true(g:ScriptVarFound)
+ vim9cmd source ++clear
+ call assert_false(g:MyFuncFound)
+ call assert_false(g:ScriptVarFound)
+ vim9cmd source ++clear
+ call assert_false(g:MyFuncFound)
+ call assert_false(g:ScriptVarFound)
+ call assert_fails('vim9cmd source ++clearx', 'E475:')
+ call assert_fails('vim9cmd source ++abcde', 'E484:')
+
%bw!
endfunc