TiddlyWiki5/editions/prerelease/tiddlers/Release 5.3.0.tid

caption: 5.3.0
created: 20230506164543446
modified: 20230506164543446
tags: ReleaseNotes
title: Release 5.3.0
type: text/vnd.tiddlywiki

//[[See GitHub for detailed change history of this release|https://github.com/Jermolene/TiddlyWiki5/compare/v5.2.7...master]]//

! Overview of v5.3.0

This release introduces a number of significant improvements and new features related to some of TiddlyWiki's most fundamental components: macros, widgets, operators and transclusion. v5.3.0 also contains several other bug fixes and improvements.

! Introduction to Parameterised Transclusion, Procedures, Functions and Custom Widgets

<<.link-badge-added "https://github.com/Jermolene/TiddlyWiki5/pull/6666">> The motivation of these changes is to fix one of ~TiddlyWiki 5's early design flaws: the reliance on macros using textual substitution as the primary way to modularise and reuse wikitext and filters.

Experience has shown that while macros are a good match for a small number of tasks, they are brittle and error prone for many common operations. See [[Macro Pitfalls]] for a discussion of the problems that accompany this approach. Over the years we have introduced mitigations for the worst problems but these have come at a cost of increased complexity.

The changes in this release provide powerful new ways to achieve common tasks, and unlock completely new capabilities that were previously impossible in wikitext.

* [[Procedures]], which are essentially what macros should have been; they work in exactly the same way except that parameters are exposed as simple variables (without the double underscores) and no textual substitution takes place
* [[Custom Widgets]], allowing the creation of widgets in wikitext, and the redefinition of built-in widgets
* [[Functions]], a new way to encapsulate filter expressions with named parameters, including the ability to make custom filter operators
* Parameterised [[Transclusions|Transclusion]], allowing strings and wikitext trees to be passed to transclusions

The approach taken by this release is to add new functionality by extending and augmenting the system without disturbing existing functionality. All of these changes are thus intended to be backwards compatible. While they represent a new field of opportunities for wikitext authors, it is possible for authors to ignore all these new features and continue to use ~TiddlyWiki 5 in the way that they have always done.

These changes lay the groundwork for macros and related features to be deprecated (which is the point at which users are advised not to use old features, and instead given clear pointers to the equivalent modern functionality).

The new transclusion architecture is not by itself sufficient to enable us to fully deprecate macros yet. To handle the remaining use cases we propose a new backtick quoted attribute format that allows for the substitution of variable values. See https://github.com/Jermolene/TiddlyWiki5/issues/6663 for details.

! Plugin Improvements

* <<.link-badge-extended "https://github.com/Jermolene/TiddlyWiki5/pull/7260">> Dynannotate pugin to support three additional search modes
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7365">> problem with [[BrowserStorage Plugin]] unnecessarily saving shadow tiddlers
* <<.link-badge-improved "https://github.com/Jermolene/TiddlyWiki5/pull/7493">> [[CodeMirror Plugin]] to add an option to make trailing spaces visible

! Translation improvement

Improvements to the following translations:

* 

! Accessibility Improvements

* 

! Usability Improvements

* 

! Widget Improvements

*

! Filter improvements

* <<.link-badge-added "https://github.com/Jermolene/TiddlyWiki5/pull/7511"> new [[deserialize Operator]] for converting various textual representations of tiddlers into JSON data
* <<.link-badge-extended "https://github.com/Jermolene/TiddlyWiki5/pull/7292">> [[format Operator]] to support converting Unix timestamps to TiddlyWiki's native date format


! Hackability Improvements

* <<.link-badge-extended "https://github.com/Jermolene/TiddlyWiki5/pull/7413">> [[Core Icons]] to allow the size to be controlled with a parameter
** <<.warning """This change can cause problems with non-standard usage of the core icons where the text is directly rendered instead of being transcluded""">>
* <<.link-badge-added "https://github.com/Jermolene/TiddlyWiki5/pull/7182">> new [[thisTiddler Variable]] that refers to the tiddler currently being rendered
* <<.link-badge-improved "https://github.com/Jermolene/TiddlyWiki5/pull/7332">> [[Story Tiddler Template Cascade]] handling to fall back to the default template if the output of the cascade is not valid
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7378">> missing file extensions for "audio/mpeg" files

! Bug Fixes

* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7215">> importing tiddlers by pasting tiddler data
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7400">> unneeded 14px bottom border for textareas with autoheight enabled
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7380">> crashes when using an invalid CSS selector for [[WidgetMessage: tm-focus-selector]] and [[WidgetMessage: tm-scroll]]
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7401">> bug whereby scrolling occurs if the linkcatcher widget triggers an action-navigate and the $scroll attribute is set to "no"
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7409">> problem switching between LTR and RTL text
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/7448">> bug when checkbox widget's listField attribute was given the name of a date field (like <<.field created>> or <<.field modified>>)
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/issues/7529">> size of buttons in dropdown for editor "link" toolbar button
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/commit/8e132948b6bec623d81d300fbe6dc3a0307bcc6d">> crash when transcluding a lazily loaded tiddler as an attribute value
* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/issues/7462">> DiffTextWidget crash with missing or empty attributes
* <<.link-badge-improved "https://github.com/Jermolene/TiddlyWiki5/pull/7448">> CheckboxWidget to avoid writing to date fields

! Developer Improvements

* 

! Node.js Improvements

* <<.link-badge-extended "https://github.com/Jermolene/TiddlyWiki5/pull/7471">> [[WebServer Parameter: authenticated-user-header]] to require URI encoding of authenticated username header, permitting non-ASCII characters in usernames
* <<.link-badge-added "https://github.com/Jermolene/TiddlyWiki5/pull/7253">> support for `filepath` source attribute to [[tiddlywiki.files Files]]
* <<.link-badge-added "https://github.com/Jermolene/TiddlyWiki5/commit/48b22abdaab62c281c207127c66883b50898f9dd">> a warning message for JSON errors in [[tiddlywiki.info Files]] or [[plugin.info Files|PluginFolders]]

! Performance Improvements

* <<.link-badge-fixed "https://github.com/Jermolene/TiddlyWiki5/pull/4624">> module execution to reuse the same sandbox, saving memory and improving performance

! Acknowledgements

[[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:

<<.contributors """
Arlen22
BramChen
btheado
donmor
flibbles
GameDungeon
JoshuaFontany
kookma
linonetwo
Marxsal
mateuszwilczek
michsa
muzimuzhi
pmario
rmunn
saqimtiaz
tavin
twMat
yaisog
""">>