[ruby-core:112950] [Ruby master Bug#19539] Heredocs with leading spaces inconsistency

Issue #19539 has been updated by hurricup (Alexandr Evstigneev).


nobu (Nobuyoshi Nakada) wrote in #note-1:
> Applied in changeset commit:git|67dd52d59cde0d2f1ebb3e299b605ed239b59f5b.
> 
> ----------
> [Bug #19539] Match heredoc identifier from end of line
> 
> Not to ignore leading spaces in indented heredoc identifier.

Test in the changeset does not cover the latter case, when identifier with leading spaces is also indented. Is this expected to work?

----------------------------------------
Bug #19539: Heredocs with leading spaces inconsistency
https://bugs.ruby-lang.org/issues/19539#change-102476

* Author: hurricup (Alexandr Evstigneev)
* Status: Closed
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
This is more like technical inconsistency that bothers me. Not sure someone will use this in real life, but still.
This works fine:

```
puts <<'    ABC'
marker with spaces
    ABC
```

But this is not:

```
puts <<-'    ABC'
marker with spaces
    ABC
```

as well as 

```
puts <<~'    ABC'
marker with spaces
    ABC
```

I would expect it to wok properly, even in case:

```
puts <<-'    ABC'
    marker with spaces
        ABC
```




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