vim-patch:8.1.1846: inconsistently using GetVimCommand() and v:progpath

Problem:    Inconsistently using GetVimCommand() and v:progpath. (Daniel
            Hahler)
Solution:   Use GetVimCommand(). (closes vim/vim#4806)
93344c2d70

Cherry-pick a change to test_profile.vim from patch 8.1.1544.
Cherry-pick a change to test_vimscript.vim from patch 8.1.1826.

Some of the args are no-op in Nvim, and `-i NONE` and `--headless` are
already added by `GetVimCommand()`. I'll try to match the order of args
in upstream, substituting `--not-a-term` with `--headless`.

src/nvim/testdir/test_autocmd.vim

@@ -502,7 +502,7 @@ func Test_autocmd_bufwipe_in_SessLoadPost()
   [CODE]
 
   call writefile(content, 'Xvimrc')
-  call system(v:progpath. ' --headless -i NONE -u Xvimrc --noplugins -S Session.vim -c cq')
+  call system(GetVimCommand('Xvimrc') .. ' --headless --noplugins -S Session.vim -c cq')
   let errors = join(readfile('Xerrors'))
   call assert_match('E814', errors)
 
@@ -562,7 +562,7 @@ func Test_autocmd_bufwipe_in_SessLoadPost2()
   [CODE]
 
   call writefile(content, 'Xvimrc')
-  call system(v:progpath. ' --headless -i NONE -u Xvimrc --noplugins -S Session.vim -c cq')
+  call system(GetVimCommand('Xvimrc') .. ' --headless --noplugins -S Session.vim -c cq')
   let errors = join(readfile('Xerrors'))
   " This probably only ever matches on unix.
   call assert_notmatch('Caught deadly signal SEGV', errors)
@@ -1506,7 +1506,7 @@ func Test_bufunload_all()
   call writefile(content, 'Xtest')
 
   call delete('Xout')
-  call system(v:progpath. ' -u NORC -i NONE -N -S Xtest')
+  call system(GetVimCommandClean() .. ' -N --headless -S Xtest')
   call assert_true(filereadable('Xout'))
 
   call delete('Xxx1')

src/nvim/testdir/test_normal.vim

@@ -1118,7 +1118,7 @@ func Test_normal20_exmode()
   endif
   call writefile(['1a', 'foo', 'bar', '.', 'w! Xfile2', 'q!'], 'Xscript')
   call writefile(['1', '2'], 'Xfile')
-  call system(v:progpath .' -e -s < Xscript Xfile')
+  call system(GetVimCommand() .. ' -e -s < Xscript Xfile')
   let a=readfile('Xfile2')
   call assert_equal(['1', 'foo', 'bar', '2'], a)
 
@@ -1171,13 +1171,13 @@ func Test_normal22_zet()
   endfor
 
   call writefile(['1', '2'], 'Xfile_Test_normal22_zet')
-  let args = ' --headless -u NONE -N -U NONE -i NONE --noplugins'
+  let args = ' -N -i NONE --noplugins -X --headless'
-  call system(v:progpath . args . ' -c "%d" -c ":norm! ZZ" Xfile_Test_normal22_zet')
+  call system(GetVimCommand() .. args .. ' -c "%d" -c ":norm! ZZ" Xfile_Test_normal22_zet')
   let a = readfile('Xfile_Test_normal22_zet')
   call assert_equal([], a)
   " Test for ZQ
   call writefile(['1', '2'], 'Xfile_Test_normal22_zet')
-  call system(v:progpath . args . ' -c "%d" -c ":norm! ZQ" Xfile_Test_normal22_zet')
+  call system(GetVimCommand() . args . ' -c "%d" -c ":norm! ZQ" Xfile_Test_normal22_zet')
   let a = readfile('Xfile_Test_normal22_zet')
   call assert_equal(['1', '2'], a)
 

src/nvim/testdir/test_profile.vim

@@ -1,8 +1,9 @@
 " Test Vim profiler
-if !has('profile')
-  finish
-endif
 
+source check.vim
+CheckFeature profile
+
+source shared.vim
 source screendump.vim
 
 func Test_profile_func()
@@ -37,7 +38,7 @@ func Test_profile_func()
   [CODE]
 
   call writefile(lines, 'Xprofile_func.vim')
-  call system(v:progpath
+  call system(GetVimCommand()
     \ . ' -es --clean'
     \ . ' -c "so Xprofile_func.vim"'
     \ . ' -c "qall!"')
@@ -124,8 +125,8 @@ func Test_profile_func_with_ifelse()
   [CODE]
 
   call writefile(lines, 'Xprofile_func.vim')
-  call system(v:progpath
+  call system(GetVimCommand()
-    \ . ' -es -u NONE -U NONE -i NONE --noplugin'
+    \ . ' -es -i NONE --noplugin'
     \ . ' -c "profile start Xprofile_func.log"'
     \ . ' -c "profile func Foo*"'
     \ . ' -c "so Xprofile_func.vim"'
@@ -237,8 +238,8 @@ func Test_profile_func_with_trycatch()
   [CODE]
 
   call writefile(lines, 'Xprofile_func.vim')
-  call system(v:progpath
+  call system(GetVimCommand()
-    \ . ' -es -u NONE -U NONE -i NONE --noplugin'
+    \ . ' -es -i NONE --noplugin'
     \ . ' -c "profile start Xprofile_func.log"'
     \ . ' -c "profile func Foo*"'
     \ . ' -c "so Xprofile_func.vim"'
@@ -324,8 +325,8 @@ func Test_profile_file()
   [CODE]
 
   call writefile(lines, 'Xprofile_file.vim')
-  call system(v:progpath
+  call system(GetVimCommandClean()
-    \ . ' -es --clean'
+    \ . ' -es'
     \ . ' -c "profile start Xprofile_file.log"'
     \ . ' -c "profile file Xprofile_file.vim"'
     \ . ' -c "so Xprofile_file.vim"'
@@ -369,8 +370,8 @@ func Test_profile_file_with_cont()
     \ ]
 
   call writefile(lines, 'Xprofile_file.vim')
-  call system(v:progpath
+  call system(GetVimCommandClean()
-    \ . ' -es -u NONE -U NONE -i NONE --noplugin'
+    \ . ' -es'
     \ . ' -c "profile start Xprofile_file.log"'
     \ . ' -c "profile file Xprofile_file.vim"'
     \ . ' -c "so Xprofile_file.vim"'
@@ -427,7 +428,7 @@ func Test_profile_truncate_mbyte()
     \ ]
 
   call writefile(lines, 'Xprofile_file.vim')
-  call system(v:progpath
+  call system(GetVimCommandClean()
     \ . ' -es --cmd "set enc=utf-8"'
     \ . ' -c "profile start Xprofile_file.log"'
     \ . ' -c "profile file Xprofile_file.vim"'
@@ -474,7 +475,7 @@ func Test_profdel_func()
     call Foo3()
   [CODE]
   call writefile(lines, 'Xprofile_file.vim')
-  call system(v:progpath . ' -es --clean -c "so Xprofile_file.vim" -c q')
+  call system(GetVimCommandClean() . ' -es -c "so Xprofile_file.vim" -c q')
   call assert_equal(0, v:shell_error)
 
   let lines = readfile('Xprofile_file.log')
@@ -509,7 +510,7 @@ func Test_profdel_star()
     call Foo()
   [CODE]
   call writefile(lines, 'Xprofile_file.vim')
-  call system(v:progpath . ' -es --clean -c "so Xprofile_file.vim" -c q')
+  call system(GetVimCommandClean() . ' -es -c "so Xprofile_file.vim" -c q')
   call assert_equal(0, v:shell_error)
 
   let lines = readfile('Xprofile_file.log')

src/nvim/testdir/test_suspend.vim

@@ -26,8 +26,8 @@ func Test_suspend()
   " Wait for shell prompt.
   call WaitForAssert({-> assert_match('[$#] $', term_getline(buf, '.'))})
 
-  call term_sendkeys(buf, v:progpath
+  call term_sendkeys(buf, GetVimCommandClean()
-        \               . " --clean -X"
+        \               . " -X"
         \               . " -c 'set nu'"
         \               . " -c 'call setline(1, \"foo\")'"
         \               . " Xfoo\<CR>")

src/nvim/testdir/test_system.vim

@@ -50,11 +50,11 @@ endfunc
 
 func Test_system_exmode()
   if has('unix') " echo $? only works on Unix
-    let cmd = ' -es --headless -u NONE -c "source Xscript" +q; echo "result=$?"'
+    let cmd = ' -es -c "source Xscript" +q; echo "result=$?"'
     " Need to put this in a script, "catch" isn't found after an unknown
     " function.
     call writefile(['try', 'call doesnotexist()', 'catch', 'endtry'], 'Xscript')
-    let a = system(v:progpath . cmd)
+    let a = system(GetVimCommand() . cmd)
     call assert_match('result=0', a)
     call assert_equal(0, v:shell_error)
   endif
@@ -62,33 +62,33 @@ func Test_system_exmode()
   " Error before try does set error flag.
   call writefile(['call nosuchfunction()', 'try', 'call doesnotexist()', 'catch', 'endtry'], 'Xscript')
   if has('unix') " echo $? only works on Unix
-    let a = system(v:progpath . cmd)
+    let a = system(GetVimCommand() . cmd)
     call assert_notequal('0', a[0])
   endif
 
-  let cmd = ' -es --headless -u NONE -c "source Xscript" +q'
+  let cmd = ' -es -c "source Xscript" +q'
-  let a = system(v:progpath . cmd)
+  let a = system(GetVimCommand() . cmd)
   call assert_notequal(0, v:shell_error)
   call delete('Xscript')
 
   if has('unix') " echo $? only works on Unix
-    let cmd = ' -es --headless -u NONE -c "call doesnotexist()" +q; echo $?'
+    let cmd = ' -es -c "call doesnotexist()" +q; echo $?'
-    let a = system(v:progpath. cmd)
+    let a = system(GetVimCommand() . cmd)
     call assert_notequal(0, a[0])
   endif
 
-  let cmd = ' -es --headless -u NONE -c "call doesnotexist()" +q'
+  let cmd = ' -es -c "call doesnotexist()" +q'
-  let a = system(v:progpath. cmd)
+  let a = system(GetVimCommand(). cmd)
   call assert_notequal(0, v:shell_error)
 
   if has('unix') " echo $? only works on Unix
-    let cmd = ' -es --headless -u NONE -c "call doesnotexist()|let a=1" +q; echo $?'
+    let cmd = ' -es -c "call doesnotexist()|let a=1" +q; echo $?'
-    let a = system(v:progpath. cmd)
+    let a = system(GetVimCommand() . cmd)
     call assert_notequal(0, a[0])
   endif
 
-  let cmd = ' -es --headless -u NONE -c "call doesnotexist()|let a=1" +q'
+  let cmd = ' -es -c "call doesnotexist()|let a=1" +q'
-  let a = system(v:progpath. cmd)
+  let a = system(GetVimCommand() . cmd)
   call assert_notequal(0, v:shell_error)
 endfunc
 

src/nvim/testdir/test_vimscript.vim

@@ -1,6 +1,9 @@
 " Test various aspects of the Vim script language.
 " Most of this was formerly in test49.
 
+source check.vim
+source shared.vim
+
 "-------------------------------------------------------------------------------
 " Test environment							    {{{1
 "-------------------------------------------------------------------------------
@@ -1744,7 +1747,7 @@ func Test_function_defined_line()
     [CODE]
 
     call writefile(lines, 'Xtest.vim')
-    let res = system(v:progpath .. ' --clean -es -X -S Xtest.vim')
+    let res = system(GetVimCommandClean() .. ' -es -X -S Xtest.vim')
     call assert_equal(0, v:shell_error)
 
     let m = matchstr(res, 'function F1()[^[:print:]]*[[:print:]]*')