[ http://issues.apache.org/jira/browse/VELOCITY-253?page=all ]
Henning Schmiedehausen updated VELOCITY-253:
--------------------------------------------
Bugzilla Id: (was: 27413)
Reporter: Christoph Reck (was: Christoph)
change reporter as requested by christoph reck.
> Enhance whitespace gobbling
> ---------------------------
>
> Key: VELOCITY-253
> URL: http://issues.apache.org/jira/browse/VELOCITY-253
> Project: Velocity
> Type: Wish
> Components: Source
> Versions: 1.0-Release
> Environment: Operating System: other
> Platform: Other
> Reporter: Christoph Reck
> Fix For: 2.0
>
> I expect that when adding velocity markup to an existing text file
> to not affect the spacing in the output. This includes indented #foreach
> directives and inner indented #if/#set/#macro directives.
> So the rule I proposed was to allow adding velocity markup, one per line,
> and still have the same output - e.g. add an #if statement around
> existing text to conditionally mask it out. Or add an #foreach around
> a table row and be able to repeat the body with dynamic data, etc.
> As sonn as a directive is placed wihtin other text in the same line,
> any whitespace around it should remain untouched.
> If a line is looks like this:
> DirectiveLine ::= LineEnd TabsAndSpaces? Directive TabsAndSpaces? LineEnd
> TabsAndSpaces ::= (#x20 | #x09)+
> LineEnd ::= StartOfStream | ((#x0D #x0A) | #x0D | #x0A) | EndOfStream
> then the first "TabsAndSpaces?" and the closing "TabsAndSpaces? LineEnd"
> should be gobbled. (Note that it supports multiline directives, that is
> why "DirectiveLine" is not simply "Line".) If you whant the first
> "LineEnd" to be gobbled prepend a ## before it (makes the EOL part of
> the previous line!).
> This has been an isse since velocity birth and discussed in many
> user and developer threads. Some users agree with my proposals,
> some say that velocity sould not touch any whitespaces and a
> code formatter should be run after the template rendering.
> The proposal is not 100% BC, but a switch could allow the classic
> style (by default), or to pass all whitespaces.
> A new directive could be created to control the gobbling for
> the enclosed parts within a template.
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