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bug#50387: Possible bug in Tramp or in completions
From: |
Gregory Heytings |
Subject: |
bug#50387: Possible bug in Tramp or in completions |
Date: |
Sun, 05 Sep 2021 00:43:59 +0000 |
With a ~/.ssh/config file containing two entries:
Host foo
...
Host bar
...
emacs -Q
M-: (setq tramp-default-method "ssh")
M-: (add-to-list 'completion-styles 'substring)
C-x C-x /ssh: TAB
displays "Sole completion". If, instead of having completion-styles set
to:
(substring basic partial-completion emacs22)
it is set to:
(basic substring partial-completion emacs22)
then two completion candidates are shown (as expected): "ssh:foo:" and
"ssh:bar:".
This happens because the "substring" completion mechanism is tried first
by completion--some in completion--nth-completion, and returns (t .
substring), because
(completion-substring-try-completion "/ssh:" #'completion-file-name-table
#'file-exists-p 5)
returns t, because
(completion-substring--all-completions "/ssh:"
#'completion-file-name-table #'file-exists-p 5) returns (("ssh:")
returns (prefix "ssh:") "/" "" 1), because
(completion-boundaries "/ssh:" #'completion-file-name-table
#'file-exists-p "")
returns (1 . 0).
When the "basic" completion mechanism is tried first,
(completion-basic-try-completion "/ssh:" #'completion-file-name-table
#'file-exists-p 5)
returns ("/ssh:" . 5).
It is not clear to me whether this is a bug (I always thought that the
order of completion mechanisms in completion-styles did not matter, and in
this case it does indeed make no difference with (setq
tramp-default-method "scp")), and if so if it is a bug in Tramp, or in the
completion functions.
- bug#50387: Possible bug in Tramp or in completions,
Gregory Heytings <=
- bug#50387: Possible bug in Tramp or in completions, Gregory Heytings, 2021/09/05
- bug#50387: Possible bug in Tramp or in completions, Michael Albinus, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Gregory Heytings, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Michael Albinus, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Gregory Heytings, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Michael Albinus, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Gregory Heytings, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Michael Albinus, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Gregory Heytings, 2021/09/06
- bug#50387: Possible bug in Tramp or in completions, Michael Albinus, 2021/09/06