VisualEditor: Transclusions editor should support parser functions and variables
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Description

Parser function syntax is generally {{#function_name : expr1 | expr2 | expr3 | ...}}

Currently VE sees this as a template with name "#function_name : expr1" and arguments "1 = expr2", "2 = expr3", etc. This makes it impossible to edit expr1 in VE.

Same for parserfunctions like urlencode and template messages. The transclusions editor should be able to handle them, preferably by invisibly detecting them and failing that with a special, user-selected mode. Until we can, we should show an explanatory message when the user attempts to add one.

See also:
T54607: TemplateData: Implement hook for extensions to document magic words and parser functions

bzimport set Reference to bz50855.
TheDJ created this task.Jul 6 2013, 9:49 AM

Yes, we need a special form of editing transclusions which aren't templates; I can't recall whether Parsoid gives us sufficient information to recognise these as different except for introspection.

NicoV added a comment.Jul 10 2013, 2:16 PM

Many of the parser functions are rarely used in the main namespace (#if, ...), but some of them are really important even in the main namespace. For example {{formatnum:...}} is probably used a lot there.

Jdforrester-WMF lowered the priority of this task from "High" to "Normal".Jan 9 2015, 10:55 PM

If Parsoid doesn't automatically tell VE whether something is a template or not, could it not be done by looking at the format of the string (e.g. {{# is never a template) or comparing it to a list of parser functions?

Neil_P._Quinn_WMF changed the title from "VisualEditor: Transclusions editor should have a special mode for Parser Function and Magic Word calls" to "VisualEditor: Transclusions editor should support parser functions and variables".Jul 23 2015, 11:00 PM
Neil_P._Quinn_WMF edited the task description. (Show Details)
Neil_P._Quinn_WMF lowered the priority of this task from "Normal" to "Low".
Neil_P._Quinn_WMF added a project: Epic.
Neil_P._Quinn_WMF set Security to None.
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