4 Commits

Author	SHA1	Message	Date
jeremy@jermolene.com	150266c731	Use underscores for new system fields for global variable tiddlers ... For consistency with `_canonical_uri`; unlike many system fields, the behaviour of these fields is baked into the core JS code.	2022-05-30 18:38:25 +01:00
jeremy@jermolene.com	5d413d3e2d	Change to ? for conditional definitions	2022-05-28 13:49:02 +01:00
jeremy@jermolene.com	f636349007	Introduce true global variables ... The basic idea is that if we don't find a variable `foo` then we fallback to retrieving the value from the tiddler `$:/global/foo`, if it exists. This allows us to replace the usual importvariables-based mechanism for global definitions, avoiding cluttering up the variable namespace with every macro. In order to permit subprocedures to be overridden, we also introduce a mechanism for conditional definitions: preceding the word definition|procedure|function|widget with a + causes the definition only to occur if the specified variable doesn't already exist. In the next commit we'll apply this mechanism to the tabs macro	2022-05-28 12:23:50 +01:00
jeremy@jermolene.com	6f9f92fa69	Add support for $:/tags/Global	2022-05-26 21:11:53 +01:00