Imported From: https://issues.scala-lang.org/browse/SI-10105?orig=1
Reporter: @som-snytt
Affected Versions: 2.12.1

@milessabin said:
Shouldn't we have "-- " to be fully Haskellator compliant?

@SethTisue said:
when's the next Scala Comment Syntax Improvement Process meeting...?

@milessabin said:
Around the time Hell next freezes over I think.

@som-snytt said:
San Francisco just had a frost.

Also, Scala Center issued a Request for Comments.

@lrytz said:
I would also love to see

REM my commet

That would really help with the context switching on those days where you go back and forth between batch scripts and Scala.

@SethTisue said:
I'm all for REM, but only if it's the Applesoft BASIC REM, not the DOS batch file REM.

@som-snytt said:
Double semi is especially useless, pace the original reporter.

;; looks like a walrus in certain fonts, I think
;; two eyes and cute little tusks
;; or possibly that weird spider with the beady eyes
def iam = "walrus"

That works if Scala doesn't adopt forever syntax, for (;; ). Extra space to avoid winky emoji.

I often accidentally insert // in my shell scripts, so it would be great if double hash were also supported. It could resolve to this.## if that typechecks and a line comment otherwise.

@som-snytt said:
Twitter found the previous convo. How long must the people suffer?

@dwijnand said:
The recovering bashistas are formally requesting # for single-line comments.

@som-snytt said:
Deprecating ## for hashCode to enable more comment styles.

This effort has been superseded by Commentless Scala, which removes support for all comments, in favor of the commentator interpolator. SIP # is TBD, but the feature is tentatively scheduled for 2.14.