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irb.rb: backtrace order

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* lib/irb.rb (handle_exception): show backtrace from the topmost
  if stdout is not a tty.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63146 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-04-13 18:11:22 +00:00
parent a90e24268c
commit 282efd1f32
1 changed files with 28 additions and 10 deletions
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38
lib/irb.rb
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@ -511,6 +511,12 @@ module IRB
irb_bug = false
end
if STDOUT.tty?
attr = ATTR_TTY
print "#{attr[1]}Traceback#{attr[]} (most recent call last):\n"
else
attr = ATTR_PLAIN
end
messages = []
lasts = []
levels = 0
@ -518,7 +524,12 @@ module IRB
count = 0
exc.backtrace.each do |m|
m = @context.workspace.filter_backtrace(m) or next unless irb_bug
m = sprintf("%9d: from %s", (count += 1), m)
count += 1
if attr == ATTR_TTY
m = sprintf("%9d: from %s", count, m)
else
m = "\tfrom #{m}"
end
if messages.size < @context.back_trace_limit
messages.push(m)
elsif lasts.size < @context.back_trace_limit
@ -527,16 +538,23 @@ module IRB
end
end
end
attr = STDOUT.tty? ? ATTR_TTY : ATTR_PLAIN
print "#{attr[1]}Traceback#{attr[]} (most recent call last):\n"
unless lasts.empty?
puts lasts.reverse
printf "... %d levels...\n", levels if levels > 0
if attr == ATTR_TTY
unless lasts.empty?
puts lasts.reverse
printf "... %d levels...\n", levels if levels > 0
end
puts messages.reverse
end
m = exc.to_s.split(/\n/)
print "#{attr[1]}#{exc.class} (#{attr[4]}#{m.shift}#{attr[0, 1]})#{attr[]}\n"
puts m.map {|s| "#{attr[1]}#{s}#{attr[]}\n"}
if attr == ATTR_PLAIN
puts messages
unless lasts.empty?
puts lasts
printf "... %d levels...\n", levels if levels > 0
end
end
puts messages.reverse
messages = exc.to_s.split(/\n/)
print "#{attr[1]}#{exc.class} (#{attr[4]}#{messages.shift}#{attr[0, 1]})#{attr[]}\n"
puts messages.map {|s| "#{attr[1]}#{s}#{attr[]}\n"}
print "Maybe IRB bug!\n" if irb_bug
end