[Merge] lp:~jjo/bash-completion/quote_readline_by_ref_fixes into lp:ubuntu/bash-completion

[JuanJo Ciarlante]

JuanJo Ciarlante has proposed merging lp:~jjo/bash-completion/quote_readline_by_ref_fixes into lp:ubuntu/bash-completion.

Commit message:
[jjo, r=] fix _quote_readline_by_ref to:
- avoid escaping 1st '~' (lp: #1288314)
- avoid quoting if empty, else expansion without args only shows dirs (lp: #1288031)
- replace double escaping to single (eg for completing file/paths with spaces)

Requested reviews:
  Ubuntu branches (ubuntu-branches)

For more details, see:
https://code.launchpad.net/~jjo/bash-completion/quote_readline_by_ref_fixes/+merge/210930
-- 
https://code.launchpad.net/~jjo/bash-completion/quote_readline_by_ref_fixes/+merge/210930
Your team Ubuntu branches is requested to review the proposed merge of lp:~jjo/bash-completion/quote_readline_by_ref_fixes into lp:ubuntu/bash-completion.
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