From: "nobu (Nobuyoshi Nakada) via ruby-core" <ruby-core@...>
Date: 2024-05-27T00:08:27+00:00
Subject: [ruby-core:118021] [Ruby master Misc#20503] Dedenting heredoc line continuation

Issue #20503 has been updated by nobu (Nobuyoshi Nakada).


Line continuations work before (or in an under layer of) here documents.
For example, this is a syntax error, because `eos` line is continuing.

```ruby
<<eos
\
eos
```

Does this explanation make sense?

----------------------------------------
Misc #20503: Dedenting heredoc line continuation
https://bugs.ruby-lang.org/issues/20503#change-108440

* Author: kddnewton (Kevin Newton)
* Status: Open
----------------------------------------
When there is a line continuation inside a dedenting heredoc, occasionally it will impact the dedent calculation in interesting ways. I'm not sure if it's a bug, or if my understanding is incorrect.

```ruby
<<~eos
  TEXT
eos
```

In this case the string is `"TEXT\n", because the common whitespace is 2 and it's removed from the only line. However if there is a line continuation:

```ruby
<<~eos
  \
TEXT
eos
```

then the results is `"  TEXT\n"`. To me this seems incorrect, because the second line is supposed to be considered as part of the first, which would mean it should have the same result as the first one.

So either my understanding is incorrect or this is a bug. Could someone clarify? Thanks!



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