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Feature #4513
closed
allow whitespace following EOL continuation backslash
[ruby-core:<unknown>]
Description
In a few programming languages, the displayed or printed program can hide
critical syntactic and/or semantic information. For example, in make(1)
and Python, the difference between initial tabs and spaces can cause bugs
that are not visually apparent.
Ruby has a minor instance of this problem, in that spaces or tabs
between a backslash and the EOL will prevent the line from being continued:
>> a \
?> = 2
=> 2
>> b \
SyntaxError: compile error
(irb):3: syntax error, unexpected $undefined, expecting $end
from (irb):3
Could Ruby open up its syntax to allow any number of intervening spaces or tabs before the EOL?
Updated by nahi (Hiroshi Nakamura) about 13 years ago
- Description updated (diff)
- Category set to core
- Status changed from Open to Assigned
- Assignee set to nobu (Nobuyoshi Nakada)
Regardless it's acceptable or not, we want to check nobu's local patches first. Don't you have that?
Updated by mame (Yusuke Endoh) over 12 years ago
- Target version set to 2.6
Updated by nobu (Nobuyoshi Nakada) over 12 years ago
- Priority changed from Normal to 3
It is easy to change, but I doubt if it is useful.
Updated by
Updated by nobu (Nobuyoshi Nakada) about 7 years ago
- Description updated (diff)
Warning for a backslash followed by spaces is:
Old:
$ ruby2.5 -e ' \ '
-e:1: syntax error, unexpected $undefined
Now:
$ ruby -e ' \ '
-e:1: syntax error, unexpected backslash
Does this help you?
Updated by nobu (Nobuyoshi Nakada) about 7 years ago
- Status changed from Assigned to Feedback
Updated by nobu (Nobuyoshi Nakada) about 7 years ago
- Related to Bug #14597: Ripper Issue - introduced between 62674 & 62681 added
Updated by nobu (Nobuyoshi Nakada) about 7 years ago
- Status changed from Feedback to Closed
Now:
$ ruby -e ' \ '
-e:1: syntax error, unexpected escaped space
Close this for now.
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