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repl: calculate JRuby overhang (or rather not)

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Fixes #1840
(NotImplementedError: vi_editing_mode?() function is unimplemented on this
machine)
This commit is contained in:
Kyrylo Silin 2018-11-03 14:11:48 +08:00
parent 312ab5aba4
commit f96bca950e
1 changed files with 13 additions and 6 deletions
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13
lib/pry/repl.rb
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@ -241,13 +241,20 @@ class Pry
# indicators in 99% of cases.
def calculate_overhang(current_prompt, original_val, indented_val)
overhang = original_val.length - indented_val.length
if readline_available? &&
if readline_available? && Readline.respond_to?(:vi_editing_mode?)
begin
# rb-readline doesn't support this method:
# https://github.com/ConnorAtherton/rb-readline/issues/152
Readline.respond_to?(:vi_editing_mode?) &&
Readline.vi_editing_mode?
if Readline.vi_editing_mode?
overhang += current_prompt.length - indented_val.length
end
rescue NotImplementedError
# VI editing mode is unsupported on JRuby.
# https://github.com/pry/pry/issues/1840
nil
end
end
[0, overhang].max
end
end