this removes additional text-nodes in the dom after each `tc-tag-list-item` caused by the last empty line
we could also just remove that line but I don't know if that's a permanent solution or if some mechanism will re-add that line at some point, so I go with the `whitespace trim` pragma
Addresses GH #3484
As far as I can tell, the popup level checks in this module are
meant to handle nested popups. It seems to me that the goal is
for at most a single hierarchy of popups to exist at any given time
- bearing that in mind, this change checks any popups currently tracked
by the module, canceling any that don't share an element hierarchy with
the new popup.
* add tv-override-missing-links variable
this lets us set `tv-override-missing-links` true so that we can fix edge cases like the `Filter` dropdown in the `Advanced Search` when `enable missing links` is unchecked in the `Settings` tab of the Control Panel
* add tv-override-missing-links to filter dropdown
* add tv-override-missing-links to type dropdown
* add tv-override-missing-links to fieldname dropd
* add tv-override-missing-links to TagManager(icons)
* undo tv-override-missing-links TagManager
not needed here
* Update link.js
* Update dropdown.tid
* Update fields.tid
* Update type.tid
* Update dropdown.tid
* Update link.js
* simplify all together
* add tv-hide-missing-links to pagetemplate
* do we need to refresh here...
... if the variable gets set on top of the pagetemplate?
* Added fixes for special characters (e.g. double quotes) (including @BurningTreeC and @Jermolene suggestions)
* Removed a lot of redundant code
* Set a default value for "tree" macro prefix parameter ($:/)
now the tag manager needs some fixes for breaking titles, too
- the `<<__variable__>>` syntax needs to be used
- the `tag-pills` don't use the tag-pill macro, but `{{||$:/core/ui/TagTemplate}}` directly
- some already sufficiently qualified states in the `iconEditor` macro are reduced to not use the `qualify` macro
* Make modals display in source Window
this makes modals display within the window where they got opened, with the parameter `rootwindow` that, if `yes` or `true`, shows the modal always in the root TW window (`<$action-sendmessage $message="tm-modal" $param="mymodal" rootwindow="yes|true"/>`)
* pass the full event to $tw.modal.display
we need the event there to find `srcDocument` and `srcWindow`
* pass event in options object
* update modal.js to use options.event
* add docs for rootwindow tm-modal attribute
* make triggerPopup optionally set state directly
* update button widget for new state attributes
* update reveal widget for new state attributes
* fix errors in button widget
* toc macros: use stateTitle and setTitle
* tree macros: use stateTitle and setTitle
* TagManager: use popupTitle, stateTitle setTitle
* body viewtemplate: use stateTitle for folded-state
* import-listings: use stateTitle and setTitle
this makes a keyboard widget update its keyInfoArray if its key has the `((descriptor))` format and one of the platform-specific configuration tiddlers with that descriptor-suffix changes
* Minor rewording of prompt text
* Moved the colon into the translation string, reasoning that it may need to be changed for languages that use punctuation differently
* Corrected expand/collapse arrows
* Moved prompt into expand/collapse button, making it easier to hit use
* List backlinks when renaming tiddler
* List references inplace
* TiddlerInfo/References accepting specific tiddler
If `operandTitle` is set, it will show its references instead of current
tiddler's.
It's purpose is to prevent code duplication (the references are listed
when renaming tiddler).
* Don't use variable for References template, use <$tiddler>
Set the `current` to desired title with `<$tiddler>` widget.
* List references in a separate block
* Rename state tiddler
* Use qualified state
this allows using the pagescroller for scrolling elements into view where the rect gets calculated somewhere else
Example: CodeMirror has the `cm.cursorCoords()` function that returns the rect of the textselection (or cursor coordinates)
this scrolls the cursor or text selection into view using tiddlywikis pagescroller:
`$tw.pageScroller.scrollIntoView(undefined, function() { return self.cm.cursorCoords(true,"window"); });`
* [Further TOC fixes] - FollowUp: fix tag macros
this fixes the tag macros when titles are used that contain quotes, especially triple quotes and more
* Update tag.tid
* correct scrolling with tc-adjust-top-of-scroll
not multiplying `offset` with t causes jumps at the first animation steps, where the offset value is bigger than `endY - scrollPosition.y`
* correct scroll offset
* changes for global keyboardshortcuts
* add keyboard.js startup module
* remove not existing "th-opening-window" hook
* correct title
* use utils.addEventListeners
* define platform lookup-names on startup
* use the startup-lookup-names array
* use the platform-specific lookupNames only
* Update keyboard.js
* move initializations to the constructor
* move initializations to the constructor
* rename hasAnyTiddlerChanged
* don't explicitely create new RegExp
* use $tw.utils.hopArray
* match strings, no regex
* remove hopArray, move to boot.js
* add $tw.utils.hopArray to boot.js
* style update
* style updates
* move more to keyboardManager module
this could probably be moved to rootwidget.js
* move more to keyboardManager module
* add event listener for shortcuts in new windows
* prevent error when opening window is blocked
* add keydown listener on document in startup.js
* delete startup/keyboard.js
* add missing this.shortcutTiddlers
* Update keyboard.js
* Update boot.js
* add exports.hopArray to utils.js
* minor codingstyle tweak
* change how lookupnames get pushed to array
* Update windows.js
* re-add shortcuts-listener for new windows
I removed this before which I think was because I misunderstood what exactly should go to a separate PR
The bug here is that incoming tiddlers (ie tiddlers that were updated on the server and synced back to the browser) will retain any fields that are currently present but deleted in the incoming tiddler
To avoid clashing with tiddlers called "login-basic" :)
We also need to revise the rout for /status for the same reason, but there are backward compatibility issues there
* Added better handling for sortByList manual placements
If manual placement specifications show up in an inconvenient order,
sortByList, will go to the trouble of processing them in that order.
* Added tests to confirm solution to (#3296)
...That custom tag ordering will not choke when tiddlers get sorted after their dependencies have been placed around them
* Corrected list-after bug when referencing external titles
* Using more error-proof $tw.utils.hop in sortByList
* minor indentation correction in test-tags.js
By almost entirely eliminating text subsitution, we can avoid the situations where special characters in tags or titles gets the macro confused.
These are quite intricate changes, and so I'd appreciate any help reviewing and testing, many thanks.
Fixes#3427
It's a bit gross that we have to change the filename used to reference the JS file. This is to make it work with the webserver.
At the moment, the webserver exposes system tiddlers as plain text renderings, and ordinary tiddlers as full HTML renderings through a view template. So we have to use a system tiddler title for the JS file.
The workaround I'm thinking of is to remove the blanket exposure of system tiddlers, and instead have a list of system tiddlers that are specifically exposed through a namespace like `127.0.0.1:8080\lib\tiddlywiki.js`. That can't clash with a tiddler title because tiddler titles are URI encoded and so can't contain slashes.
* Explore externalising TiddlyWiki's JS core into a separate file
* Fix missing newline after copyright notice
* Add an error alert if tiddlywiki.js can't be loaded
Makes things a bit easier to follow when working in multiuser environments.
@inmysocks, @danielo515, @arlen22, @pmario, @drakor does this make sense for your use cases?
* Module-ize server routes and add static file support (#2510)
* Refactor server routes to modules
New module type: serverroute
Caveats: Loading order is not deterministic but this would only matter
if two route modules attempted to use the same path regexp (that would
be silly).
* Add static assets plugin
This plugin allows the node server to fetch static assets in the /assets
directory. I felt that this was a feature that goes above the core
functionality. That is why I added it as a plugin. with the modular
route extensions this was a breeze.
* Add serverroute description to ModuleTypes
* Coding standards tweaks
* Fix filename typo
* Move support for attachments from a plugin into the core
* Missing "else"
* Refactor server handling
* Introduce a new named parameter scheme for commands
* Move the SimpleServer class into it's own module
* Deprecate the --server command because of the unwieldy syntax
* Add a new --listen command using the new syntax
For example:
tiddlywiki mywiki --listen host:0.0.0.0 port:8090
* Add check for unknown parameters
* Add support for multiple basic authentication credentials in a CSV file
Beware: Passwords are stored in plain text. If that's a problem, use an authenticating proxy and the trusted header authentication approach.
* Refactor module locations
* Rename "serverroute" module type to "route"
* Remove support for verifying optional named command parameters
The idea was to be able to flag unknown parameter names, but requiring a command to pre-specify all the parameter names makes it harder for (say) the listen command to be extensible so that plugins can add new optional parameters that they handle. (This is particularly in the context of work in progress to encapsulate authenticators into their own modules).
* Refactor the two authenticators into separate modules and add support for authorization
* Correct mistaken path.join vs. path.resolve
See https://stackoverflow.com/a/39836259
* Docs for the named command parameters
I'd be grateful if anyone with sufficient Windows experience could confirm that the note about double quotes in "NamedCommandParameters" is correct.
* Be consistent about lower case parameter names
* Do the right thing when we have a username but no password
With a username parameter but no password parameter we'll attribute edits to that username, but not require authentication.
* Remove obsolete code
* Add support for requiring authentication without restricting the username
* Refactor authorization checks
* Return read_only status in /status response
* Fix two code typos
* Add basic support for detecting readonly status and avoiding write errors
We now have syncadaptors returning readonly status and avoid attempting to write to the server if it's going to fail
* Add readonly-styles
We hide editing-related buttons in read only mode
I've made this part of the tiddlyweb plugin but I think a case could be made for putting it into the core.
* Add custom request header as CSRF mitigation
By default we require the header X-Requested-With to be set to TiddlyWiki. Can be overriden by setting csrfdisable to "yes"
See https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)_Prevention_Cheat_Sheet#Protecting_REST_Services:_Use_of_Custom_Request_Headers
* Add support for HTTPS
* First pass at a route for serving rendered tiddlers
cc @Drakor
* Tweaks to the single tiddler static view
Adding a simple sidebar
* Switch to "dash" separated parameter names
* Typo
* Docs: Update ServerCommand and ListenCommand
* First pass at docs for the new web server stuff
Writing the docs is turning out to be quite an undertaking, much harder than writing the code!
* Get rid of extraneous paragraphs in static renderings
* Rejig anonymous user handling
Now we can support wikis that are read-only for anonymous access, but allow a user to login for read/write access.
* More docs
Slowly getting there...
* Static tiddler rendering: Fix HTML content in page title
* Docs updates
* Fix server command parameter names
Missed off 30ce7ea
* Docs: Missing quotes
* Avoid inadvertent dependency on Node.js > v9.6.0
The listenOptions parameter of the plain HTTP version of CreateServer was only introduced in v9.6.0
cc @Drakor @pmario
* Typo
Using contained actions, as we were, meant that the actions (and in this case the wikify widget) were being rendered at render time, but might have been out of date by the time the actions were triggered. Using the action attribute ensures the actions are rendered when they are executed.
Fixes#3326
Fixes problem whereby a repeated "new journal" would replace the text of the existing journal tiddler if the control panel new journal text was set.
Fixes#3028 and #3265
* Refactored the is operator for simplicity and efficiency.
* Improve `is` filter documentation.
* Update is.js
* extracted `subops.length` to `num_of_subops`
* renamed `subop` to `operator` for clarity/differentiation from `subops`
* refactored to avoid using a `Set` object.
* Update is.js
* Fix WebDAV by requesting new ETag conditionally
For me. this was saving only the first time and subsequently failing.
Having revised the requests, I noticed it didn't get a new ETag after saving.
Seems not all WebDAV implementations return a new ETag in PUT requests.
In my WebDAV service (WsgiDAV) - ETag is only served from a HEAD
request.
So if no ETag is found with PUT - we request one with HEAD.
This patch fixes error handling and should also work with servers that
provide ETag directly upon PUT.
* Add tweak from PMario
* Adds a range widget
Adds a range widget that supports all the range attributes on a input[type=range] element. These include min max and increment.
* Update range.js
* Fix spaces vs tabs.
* Added documentation.
* Modify the is operator to allow multiple types to be specified.
* Fixed indentation.
* Fixed indentation.
* Rewritten to maintain input order when multiple filters provided.
* Updated documentation.
* Update is.tid
* Invoke hook when server starts
Invokes the `th-server-command-start` hook when the server is started, with the server object as the parameter. This allows adding a WebSocket listener to the server.
* Return the HTTP server from the listen function
Returns the node HTTP server created in the listen function to allow extension
* Add node HTTP server to server-command-start hook
* Change hook to post start in case we add a pre-start hook
* Create Hook__th-server-command-post-start.tid
* sets checked ckass for radio widget wrapper
* added tc-radio as standard class for radio widgets
* removed selectedClass again, as suggested
@pmario ;-)
allows to override styles more easily via new class tc-chosen
----
updated all of storyview, theme, palette, language
» both in ControlPanel as well as PageControls
» removed "current ..." form switchers as it's redundant
» streamlined toolbar buttons in ControlPanel, especially less spacing
----
fixed dropdown hover colour override
if I wouldn't then it would go blank owed to default drop-down styles
----
polished styles
» chosen items now more emphasized while curspor not indicating a link
» removed underline when hovering, used highlighted border colours instead
----
use snippets languageswitcher for pagecontrols button, after all
----
wrap all switchers in tc-chooser
----
apply big font only to buttons, not reveals in pagecontrols
----
moved language switcher wrapper class to snippet
improved language switcher image alignment
----
make tiddler and ControlPanel view behave the same. add generic tc-check-list setting. add generic input type checklist, vertical alignment.
now using css rem to address drop-downs for pagecontrols
thanks @pmario
removed css artefacts in vanilla/base from before merging @pmario's PR
with comments being baked-in I don't think we want these in the code
css simplification for .tc-chosen and tc-chooser-item
* fixed the "0 is not a number bug" in listops and x-listops
* Fixed one comment
* "default" is not a good name for a variable
* Following code styles.
Moving getInt to utils.
* Removing unwanted spaces introduced by me
* The Excise tool only works with tiddlywiki5 format, so only display it on tiddlers that use the tiddlywiki5 parser.
* The Editor Height tool and stamp tool only make sense with text editors, so only display them when the content type starts with text
When occuring in a tiddler named "New Tiddler", the following construct should return ++ instead of +[[New Tiddler]]+
<$set name="myVariable" filter="[all[current]field:title[New Tiddler]]" value="">
+<<myVariable>>+
</$set>
fixes#2970
Also fixes the nesting. If a template is defined for the list item, it should define the link as is done for **list-tagged-draggable**, i.e. the template defines any link widget it contains.
* add option to configure new tiddler title
there may be users that don't like to see the word tiddler everywhere
this makes changing titles easier to access
* controlpanel - basics - new tiddler title prompt
* controlpanel-basics- newtiddler title prompt
* controlpanel - basics - new tiddler prompt
* tc-body transparent if background attachment
if you go fullscreen with the fullscreen button, the tc-body background color hides the background attachments - so make it transparent if $:/themes/tiddlywiki/vanilla/settings/backgroundimage isn't empty
* if background attachment macro
macro to make tc-body background transparent
Spending a bit more time with Chrome dev tools, and further to 254e1ca, this optimisation reduces the rendering time for the sample TOC from 1.9s to about 0.9s...
* extend ListWidget to enforce classes
Previously, the undocumented *class* attribute only allowed to specify
additional classes to be set.
Especially for use within a LinkCatcher, you can now apply / enforce
only the custom classes and avoid any of the defaults being applied
depending on the link target.
This will allow to implement #1161 more gracefully.
* use setClass insted of exclamation mark syntax
update docs & fix typo in docs
* fr-FR translation of additional error strings
* include SaveTrail
* Amendments to the warnings upon loading content via _canonical_uri
* Typo: add a missing THE
* Clarification on why the browser might refuse to load external content
Remove URI encoding from PUT saver and let the browser handle it as necessary. This seems to be the normal way of doing things. We have confirmed that several WebDAV servers do not expect the file names to be double-encoded.
* Replacement icon stopwatch on
As discussed in issue #2690
* Replacement icon stopwatch off
As discussed in issue #2690
* Added missing tag "Resources" (Community Resource)
* Tried to make a sentence clearer
CamelCase words are NOT joined with hyphens (copy-paste error?).
Copied "directly" from the line below to make the meaning even clearer.
* Does deleting make the conflict go?
* Recreate deleted file with updated text
* days filter example should show highlights
- show a highlight using a longer timespan (180 days)
- added a second highlight to demo timespan with start AND end in the past
- better readability
* days Operator explanation optimisations
- typo
- readability (explain { positive | negative } first; remove duplication)
* Remove additional blank line
* Remove whitespace after save button
When the save button was not the last edit button (tested by moving to another place via control panel > Appearance > Toolbars > Edit Toolbar by drag-and-drop) then we got additional spacing due to whitespace in the resulting HTML after the button. This is a fix for that, I discovered while developing additional edit buttons.
A first pass at fixing #2973 - comments are welcome. If everybody is
happy, the next step is to deprecate the existing
rendertiddler(s)/savetiddler(s) commands and replace them in all
examples and tiddlywiki.info files with the new equivalents.
This change makes it possible to perform the conversion from target
tiddler title to `href` value as a filter expression (previously a
JavaScript macro was needed to use the tv-get-export-link variable)
* Add ability to now macro to return same UTC string used in the modified and created fields.
* Revert "Add ability to now macro to return same UTC string used in the modified and created fields."
This reverts commit 7b6ad7db4a.
* Mods to formatDateString to adjust displayed date to UTC for [UTC]
format. Corresponding doc changes, and optimization for special
case.
document.location gives us an URL encoded version of the original
filename, so we decode it to recover the original filename for saving.
Fixes#2828Fixes#2819
* Trim tiddler titles imported via JSON
Otherwise, it's possible to create a tiddler with a trailing space (or a
leading one, I suppose) in its title. TiddlyWiki, in general, trims
titles before operating on a tiddler, so having a tiddler with a
trailing space ends up making that tiddler, for all intents and
purposes, uneditable.
Fixes GH #2850
* Signing the CLA
* Create the "tree" global macro file (tree.tid)
* Added styles for the new "tree" global macro
* Update Explorer tab
* Cleaning the macro of unneeded code
I have chosen to keep the slash suffix in the branch node titles to go along with the rest (e.g. root node), so the "clean-chunk" macro isn't needed anymore.
* Minor fix
A couple of fixes:
* Fixed problem with loading saver in a file URI within Beaker
* Fixed problem when saving to a directory-style URI with an implicit
“/index.html”
* Switched to double quotes for strings
It was added as a separate system tiddler, but that means updating a
lot of filters to add and exclude it as appropriate (as we do with
$:/library/sjcl.js itself)
These changes allow drag and drop to work with one issue: <a> links are
not draggable; draggable divs, spans, buttons etc. seem to work fine.
There’s some issue with IE11 that I don’t understand.
For testing, you can force links to become spans by changing line 64 of
$:/core/modules/widgets/link.js to:
var domNode = this.document.createElement("span");
We do this so that we don’t accidentally modify shadow tiddlers when we
drag them to reorder them within their tag parent. Otherwise, moving a
toolbar button like $:/core/ui/Buttons/permaview in the control panel
will override the shadow tiddler.
At the moment, we support JSON files containing an array of tiddlers.
With this change the core will import files containing a single
tiddler. Also adding templates for saving individual tiddlers in JSON
format
The problem was that `this.responseText` crashes for non-text data. We
fix it by letting the client specify which property should be returned.
@ericshulman does this work for you?
* provides a "close plugin library" button
* starting from #1718 by @inmysocks
* possibly fixes all of #1718, #1597, and #2067
* corrected code comment
* add back title
No idea why I overlooked this beforehand.
Next time I will not suggest such changes that have little to do with
the PR, but rather just comment the code.
* ah, sorry, "fixed" wrong spot
now
```
<$action-sendmessage $message="tm-load-plugin-from-library"
url={{!!url}} title={{$(assetInfo)$!!original-title}}/>
```
...should be back at the right spot.
* mhhh... still fixing the mess
load, unload, puh... let's see if I got it now
* added unloadIFrame and minor syntax fixes
We now use highlight.js in raw HTML mode on the server, rather than
trying to use it with the fakedom. This causes problems with fakedoms
inability to get textContent for a node that has been created by
assigning innerHTML. So we extend the fakedom to allow the original
text content to be saved.
See #2778 for discussion.
I used this test:
console.time();for(var t=0; t<200; t++)
{$tw.wiki.filterTiddlers("[all[tiddlers+shadows]sameday[20170210]]");};c
onsole.timeEnd()
Before this patch, I got speeds of approx 190ms, versus 140ms
afterwards.
Note that the ability to add a cache property like this is only
possible because tiddler objects are immutable.
Like the load command except retrieves the file over HTTP/HTTPS.
Allows experimentation with server-side twederation
This is a cleaned up version of code that I wrote last year at TWEUM
2016 @inmysocks @pmario @twMat @xcazin
* putSaver: detect edit conflicts to prevent clobbering, if possible
if the server supplies an ETag, we send it back when saving, allowing
the server to detect edit conflicts and respond with 412 (cf.
https://www.w3.org/1999/04/Editing/)
caveats:
* this only kicks in after the first save, as we don't have access to
the ETag when first loading the document
* there's no recovery mechanism (e.g. resetting `this.etag` in order to
force clobbering), other than manually reloading the document
* putSaver: retrieve ETag upon initialization for clobbering protection
this addresses one of the caveats from the previous commit
(2d75cb83af) - while theoretically prone
to a race condition, it seems unlikely that saving will be triggered
before the server responds
* putSaver: simplify URI extraction
this simplifies the approach introduced in
f51f6bf774, with the purpose of removing
the fragment identifier
* putSaver: localize error message
* putSaver: switch to built-in HTTP helper
in the process, fixed ETag assignment in `#save` method (was
`this.etag`, now `self.etag`) as well as a syntax error due to a missing
closing brace
* putSaver: consolidate URI handling
The code here had got a bit broken by some PRs that I should have
checked more carefully. I’ve done a major refactoring which will
hopefully make it easier to understand, and fixes a number of problems:
* Problem with eg .md tiddlers not being deleted correctly
* Problem with Windows path separators not being usable within
$:/config/FileSystemPaths on Windows
* Problem with filename clashes not being detected correctly when
saving to a different directory via $:/config/FileSystemPaths
* Enables slashes within tiddler titles to be mapped into folders
* Enables plain text files like .md and .css to be saved with .meta
files instead of as .tid files (see #2558)
* No longer replaces spaces with underscores
As this is such a major update, I’d be grateful if Node.js users could
give it a careful run through — in particular, you’ll need to try
creating new tiddlers of various types and ensure that the expected
files are created.
* allows to add a new tagname hitting enter
see: https://groups.google.com/forum/#!topic/tiddlywiki/wqQ8jPYG-X4
* revert changes to vanilla/base
* added "Special Keys" to KeyboardShortcuts
* added info to Creating and editing tiddlers
did not add current version of <<.from-version "5.1.14">> because it
would interrupt the flow. When changed from a noisy "New in 5.1.14" to
"(new in 5.1.14)" we might add the version info here
* revert setText & added inline styles to vanilla base
* remove fieldmangler
* commit initial edittemplate tags to merge master
* ok, now really revert to initial edittemplate tags
* move add tag via enter into tag-picker macro(s)
* add recursion protection first take
* fix problem with selectable expand
* ust path for toc-state variable instead of tag
* reactivate disabled macro call.
The request handler may be used by ExpressJS apps directly and can do most of the heavy lifting without any modification. Note that the self variable must be assignee using `[Function].bind(null,SimpleServer instance)`.
* allow radio widget to set an index in a data tiddler
* updated RadioWidget docs, with same demo macro as for CheckboxWidget
in #2103
* removed docs in widget code (seems the wrong place)
* added from version to docs
* revert doc maros to master
* using wikitext-example-without-html and .tip macro now
* fix quotes
given a list `A B C D` if I run `A B C D +[move:-1 [A]]` I get `B C A D`. However, if I were to do `A B C D +[move:1[D]]` it doesn't wrap around, and I get `A B C D`. This fixes that such that `A B C D +[move:-1 [A]]` gives 'A B C D`
When renaming an existing tiddler, the edit template now shows a
checkbox that determines whether or not to relink references to the
tiddler in the list or tags fields of other tiddlers.
* Make expand/collapse state be global across all tiddlers
* Remove “Show raw text” option, now that we’ve got the two expandable
areas for raw and wikified text
* Hide raw text by default
* Accentuate currently open tiddler
I’m fixing this now to show how the tabs macro can be changed to
accommodate the change, but we may yet decide to reverse out the change
in order to maintain backwards compatibility.
One problem with changes like this is that there’s no easy way to find
out where it impacts the core UI. The tabs macro is now fixed, but
perhaps there’s more obscure things that are still broken in the core.
If we do opt to reverse the change to preserve backwards compatibility,
we could add a way to explicitly trigger the new behaviour. For
example, a new attribute `updateState=“yes”`.
Yet another alternative is to make completely new alternative to the
list widget with revised semantics, that authors can opt-in to. For
example `<$loop>`. (There was another issue we discussed a year or two
ago about adding support for an index variable which may be a candidate
for fixing at the same time).
