On Di, 17 Jul 2018, Dominique Pellé wrote:

> Bram Moolenaar <[email protected]> wrote:
> 
> > Patch 8.1.0193
> > Problem:    Terminal debugger buttons don't always work. (Dominique Pelle)
> > Solution:   Set 'cpo' to its default value.
> > Files:      runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
> 
> Unfortunately, I still see the same issue after 8.1.193.
> I don't have the time right now to look further, but I can debug later
> this week.
> 
> I suspect that the "\r" substitution happens when executing the command
> rather than when defining the command.

Yeah, by the time the :commands are defined, the 'cpo' setting has 
already been restored to the old user setting.

It basically comes down to this test here:

function! Test_CPO()
    let _cpo=&cpo
    set cpo=
    com! Continue :echo "Conteinue\r"
    com Continue
    set cpo=B
    com! Continue :echo "Conteinue\r"
    com Continue
    let &cpo=_cpo
endfunction
call Test_CPO()

So I think we need in addition:

diff --git a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim 
b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
index 4ccbc4cb6..d47de3616 100644
--- a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
+++ b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
@@ -566,6 +566,9 @@ endfunc

 " Install commands in the current window to control the debugger.
 func s:InstallCommands()
+  let _cpo = &cpo
+  set cpo&vim
+
   command Break call s:SetBreakpoint()
   command Clear call s:ClearBreakpoint()
   command Step call s:SendCommand('-exec-step')
@@ -603,6 +606,7 @@ func s:InstallCommands()
       an 1.230 PopUp.Evaluate          :Evaluate<CR>
     endif
   endif
+  let &cpo=_cpo
 endfunc

 let s:winbar_winids = []


Best,
Christian
-- 
Ich denke niemals an die Zukunft. Sie kommt früh genug.
                -- Albert Einstein

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