Feature #16779: Add sprintf %q format option

• Status: Rejected
• Assignee: -
• Target version: -

[gearnode (Bryan Frimin)]

It would be great to have format option for quoted string for sprintf (like golang sprintf),
it's particularly useful to format log message for example.

Currently we have to do this:

sprintf("%s", some_value.inspect.dump)

I propose to introduce the %q format option which allow to do this:

sprintf("%q", some_value)

[gearnode (Bryan Frimin)]

• Description updated (diff)

[gearnode (Bryan Frimin)]

• Description updated (diff)

[gearnode (Bryan Frimin)]

The github pull request: https://github.com/ruby/ruby/pull/3019

[Eregon (Benoit Daloze)]

Isn't %p enough (which uses #inspect)?

[Eregon (Benoit Daloze)]

.inspect.dump double quotes, that doesn't seem readable/useful to me:

puts sprintf("%s", "abc".inspect.dump)
# "\"abc\""

[gearnode (Bryan Frimin)]

I am not aware of %p format option, this option exactly did what i try to solve.
Thanks.

Someone can close this issue?

[Eregon (Benoit Daloze)]

• Status changed from Open to Rejected

[Eregon (Benoit Daloze)]

%p is part of the documentation of sprintf but maybe it's not so clear.
PR welcome to improve that documentation.