Timelion grammar needs to strictly require comma-delimitation between expressions.

[cjcenizal]

Blocks #8881.

Timelion expressions are currently both comma- and space-delimited. This precludes the possibility for writing multiline expressions and using whitespace as an organizational tool. For instance:

.es(*)
  .add(10)
  .multiply(20)

.es(*)
  .add(5)
  .multiply(10)

Will be interpreted as:

.es(*).add(10).multiply(20).es(*).add(5).multiply(10)

This is an invalid expression. To support the organizational use of whitespace in multiline expressions, we need to update Timelion's grammar to strictly require comma-delimitation between expressions, and ignore all whitespace.

Note: @rashidkpc mentioned that the ability to space-delimit your expressions is undocumented, so its usage should be less popular than the use of comma-delimited expressions. Nevertheless, we should display a warning if a user's expression is invalid and explain this change as a possible cause of the problem. @tbragin We'll also need to notify users of this potentially BWC breaking change in our release notes.

CC @thomasneirynck @ppisljar

[ppisljar]

will it ? this query seems to work correctly for me .es( 404 ) .es(*).yaxis( min : 10)

[ppisljar]

with a minor change i can make this one work as well: (spaces before ():

.es     (    404   )                  .es(*).yaxis    (     min    :   10)

[ppisljar]

ah ok .... i put space everywhere expect where it causes problem :)

.es .yaxis(min:10) will break