completion_proc

no6v (Nobuhiro IMAI)RubyKansai

Sat, 21 Jul 2012

require "readline"line edit (←→)

history (↑↓)

completion (Tab)

01 14

line edit

Readline.readline("⚡ ")

⚡ ←→

02 14

history

Readline.readline("⚡ ", true)

⚡ Readline::HISTORY.clear⚡ Readline::HISTORY << "a"⚡ Readline::HISTORY << "b"⚡ ↑↓

03 14

completion

Readline.completion_procReadline.completion_proc = ->(word){%w[word1 word2 ...]}

04 14

demodemo

memo of demogithub.com/jugyo/earthquake

github.com/no6v/rubykansai55/blob/master/completion_proc.rb

06 14

fat man in readline

puts Readline. methods(false). grep(->m{/[=?]$/!~m}). sort_by(&:size). reverse# refs hp12c http://bit.ly/QnKcDS

07 14

GJ! Thanks!! http://bit.ly/QnFG8r

08 14

breakbreak

Array-like object

Readline::HISTORY.class # => ObjectReadline::HISTORY.singleton_methods(false) # =>[:to_s, :[], :[]=, :<<, :push, :pop,

:shift, :each, :length, :size, :empty?, :delete_at, :clear]Enumerable === Readline::HISTORY # => true

10 14

but, somethings lack...unshift(*obj)

lastfirst(n)/last(n)

delete_if{|x| ... }

11 14

HISTORY.delete_if

require "readline"

class << Readline::HISTORY def delete_if(&block) return enum_for(__method__) unless block raise SecurityError if $SAFE == 4 i = 0 while (size > i) do break unless entry = self[i] if block.call(entry) delete_at(i) else i += 1 end end return self endend

12 14

hist_delete_if

static VALUEhist_delete_if(VALUE self){ HIST_ENTRY *entry; int i = 0;

RETURN_ENUMERATOR(self, 0, 0);

rb_secure(4); while (history_length > i) { entry = history_get(history_get_offset_func(i)); if (entry == NULL) break; if (RTEST(rb_yield(rb_locale_str_new_cstr(entry->line)))) rb_remove_history(i); else i++; } return self;}

13 14

Thanks & Q?Thanks & Q?