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Merge pull request #4 from talha131/update-tiddlers
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‎tiddlers/$__config_Search_AutoFocus.tid‎

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created: 20190226102210221
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creator: Mohammad
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modified: 20190316114911871
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modifier: Mohammad
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title: $:/config/Search/AutoFocus
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type: text/vnd.tiddlywiki
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false

‎tiddlers/$__plugins_ajh_favorites_list.tid‎

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created: 20190117104703657
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creator: Mohammad
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list: [[Worth Reading]] Sandbox $:/.mr/macro/utility [[Tips: Advanced Search with Search Operator]] [[Variables vs. Parameters]] [[Variable Textual Substitution]] [[Shorthand Syntax Summary]] myTemplate/help/xxx
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modified: 20190216180307587
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list: [[Worth Reading]] Sandbox $:/.mr/macro/utility [[Tips: Advanced Search with Search Operator]] [[Variables vs. Parameters]] [[Variable Textual Substitution]] [[Shorthand Syntax Summary]] myTemplate/help/xxx [[Jeremy Solution ii]]
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modified: 20190316114911720
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modifier: Mohammad
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tags:
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title: $:/plugins/ajh/favorites/list

‎tiddlers/10th March 2019.tid‎

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created: 20190310093246647
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creator: Mohammad
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modified: 20190316114912604
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modifier: Mohammad
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tags: task
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title: 10th March 2019
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type: text/vnd.tiddlywiki
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<<docit>>
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https://groups.google.com/d/msg/tiddlywiki/x2auoIxkTOY/1eRRZT_wBAAJ

‎tiddlers/12th March 2019.tid‎

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created: 20190312041049827
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creator: Mohammad
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modified: 20190316114912574
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modifier: Mohammad
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tags: task
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title: 12th March 2019
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type: text/vnd.tiddlywiki
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<<docit>>
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https://groups.google.com/d/msg/tiddlywiki/hyUV1NwYiU4/KO0t_KZ8BQAJ
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https://groups.google.com/d/msg/tiddlywiki/FZ1WEpYcr3I/IDQUi3lfBQAJ
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‎tiddlers/Add or Remove Tiddler Fields.tid‎

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created: 20190121043529373
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creator: Mohammad
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keywords: field add remove delete
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modified: 20190316114912254
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modifier: Mohammad
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responder: Tiddlywiki.com
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tags: exmp29 fieldmangler solution
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title: Add or Remove Tiddler Fields
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type: text/vnd.tiddlywiki
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url: https://tiddlywiki.com/#FieldManglerWidget
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! Add new fields
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; How to add a new field to a series of tiddlers?
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: List them and use `fieldmangler` to add the new filed.
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!! Example
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Add the new filed `rank` to all tiddlers tagged with `exmp29`
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><$macrocall $name="wikitext-example-without-html"
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src="""<$button> Add the new rank field
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<$list filter="[tag[exmp29]]">
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<$fieldmangler>
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<$action-sendmessage $message="tm-add-field" $param="rank"/>
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</$fieldmangler>
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</$list>
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</$button>
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"""/>
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!!! Remarks
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# The `list` widget list all tiddlers tagged with `Links`.
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# The `action-sendmessage` widget
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# The button widget triggers the `tm-add-field` and add the `rank` field to all those tiddlers.
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! Remove fields
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; How delete a field from a series of tiddlers?
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: List them and use `fieldmangler` to delete the filed.
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!! Example
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Delete the filed `rank` from all tiddlers tagged with `exmp29`
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><$macrocall $name="wikitext-example-without-html"
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src="""<$button> Delete the rank field
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<$list filter="[tag[exmp29]has:field[rank]]">
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<$fieldmangler>
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<$action-sendmessage $message="tm-remove-field" $param="rank"/>
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</$fieldmangler>
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</$list>
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</$button>
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"""/>
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!! Remarks
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# The `list` widget list all tiddlers tagged with `exmp29` which has a field `rank`
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# The `action-sendmessage` widget
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# The button widget triggers the `tm-remove-field` and deletes `rank` field from all those tiddlers.
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<<alert info "The field mangler widget manipulates the fields and tags of a tiddler.">>

‎tiddlers/Change the Colors of One Editor Toolbar Button.tid‎

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created: 20190314032516038
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creator: Mohammad
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keywords: editor toolbar
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modified: 20190316114911902
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modifier: Mohammad
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responder: JD
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tags: solution
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title: Change the Colors of One Editor Toolbar Button
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type: text/vnd.tiddlywiki
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url: https://groups.google.com/d/msg/tiddlywiki/hpBJ1peI4zU/i_9Lw4T9BQAJ
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; How to change the background color of list-bullet button in Tiddlywiki editor toolbar?
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: Use the below CSS. It is possible to change the background color of all butons in a similar way.
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Create a tiddler
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Tag it with `$:/tags/Stylesheet`
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Put the below CSS inside the tiddler body (text)
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```
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.tc-editor-toolbar > .tc-reveal > button {
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display: inline-flex;
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padding: 0;
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}
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.tc-editor-toolbar button .tc-image-button {
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padding: 2px;
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font-size: 1.25em;
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}
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.tc-editor-toolbar button .tc-image-list-bullet {
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display: flex;
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align-items: stretch;
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justify-content: stretch;
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fill: red;
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background-color: yellow;
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}
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```
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!! Remark
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If you need to change the background color of all toolbar buttons change the last part of above CSS as below:
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```
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.tc-editor-toolbar button {
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display: flex;
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align-items: stretch;
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justify-content: stretch;
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fill: red;
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background-color: yellow;
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}
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```

‎tiddlers/Check if Macro or Variable Exists.tid‎

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created: 20190227065336369
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creator: Mohammad
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keywords: macro variable exist
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modified: 20190316114911890
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modifier: Mohammad
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responder: Jeremy Ruston
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tags: solution exmp52
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title: Check if Macro or Variable Exists
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type: text/vnd.tiddlywiki
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url: Ref: https://groups.google.com/d/msg/tiddlywiki/4rEuAWc4EpM/JFBoPsibBwAJ
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;How to check if a macro / variable exists?
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A new subfilter `[is[variable]` has been introduced in Tddly 5.1.20 to support checking the existence of a macro variable.
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<<dbadge Tiddlywiki 5.1.20+ danger>>
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!! Syntax
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```
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[[VAR_NAME]] +[is[variable]addsuffix[ is a variable]] ~[[Undefined variable or macro 'VAR_NAME']]
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[[currentTiddler]] +[is[variable]addsuffix[ is a variable]] ~[[Undefined variable or macro ‘currentTiddler']]
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```
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!! Example i
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The below macro was proposed by [[S.S.|https://groups.google.com/d/msg/tiddlywiki/4rEuAWc4EpM/8kvLDh7qBwAJ]] and works as expected.
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```
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\define variable-test(var)
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<$list filter="[[$var$]] +[is[variable]]" emptyMessage="''$var$'' - //Undefined variable or macro//">
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''$var$'' - Existed variable or macro
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</$list>
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\end
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1. <<variable-test list-links>>
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2. <<variable-test list-linkss>>
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```
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See in [[Example 52: Check if Variable Macro Exists]] the new `subfilter` in action.
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!! Example ii
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[[Mal|https://groups.google.com/d/msg/tiddlywiki/4rEuAWc4EpM/1qOUvPdhAgAJ]] has proposed the below simple syntax
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```
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{{{ [[myMacro]] +[!is[variable]addsuffix[ is not defined]] }}}
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```
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This should produce "myMacro is not defined" or nothing if the macro or variable is defined.

‎tiddlers/Check if Passed the Macro Parameter.tid‎

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created: 20190214163529629
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creator: Mohammad
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keywords: macro blank empty parameter
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modified: 20190224163831614
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modified: 20190316114915029
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modifier: Mohammad
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responder: Mohammad and Bimlas
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tags: solution
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<<alert info "''Note'': Wrapping the whole macro inside above `list` widget causes macro only run if the parameter gets a non-Empty value.">>
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!! Alternative i
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A rather robust solution is proposed by BTC as below
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```
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\define macro2(param)
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<$list filter="[<__param__>minlength[1]]">
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Do my job!
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</$list>
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\end
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```
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In this method, if param has not been passed the `minlength[1]` returns nothing. This operator means the input should have at least one character.
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!! Alternative
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!! Alternative ii
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Bimlas in [[forum|https://groups.google.com/d/msg/tiddlywiki/82N15sAnoPs/iWhtoBjbAwAJ]] proposed this alternative, in that the macro is blank
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```

‎tiddlers/Check if Tiddler Newer Than the Other.tid‎

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created: 20190314174758260
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creator: Mohammad
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keywords: newer greater tiddler
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modified: 20190316114914999
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modifier: Mohammad
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responder: BurningTreeC
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tags: exmp54 solution
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title: Check if Tiddler Newer Than the Other
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type: text/vnd.tiddlywiki
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url: https://groups.google.com/d/msg/tiddlywiki/9QQvkJkLogA/UbIgaSFSBgAJ
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; How to check if a tiddler is newer than the other?
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: Compare the modified time of two tiddlers
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```
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\define is-thisTid-newer(TidA, TidB)
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<$set name="tidAMod" value={{{ [[$TidA$]get[modified]] }}}>
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<$set name="tidBMod" value={{{ [[$TidB$]get[modified]] }}}>
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<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidAMod>]">
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Yes, $TidA$ is newer
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</$list>
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<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidBMod>]">
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No, $TidA$ is older
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</$list>
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</$set>
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</$set>
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\end
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```
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!! Remarks
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# The first two `$set` widgets get the date of modification of two tiddlers and stores in related variables
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# The first `$list` widget uses a smart filter to determine if //tidAMod// is greater than //tidBMod//.
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# The second `$list` widget uses a smart filter to determine if //tidBMod// is greater than //tidAMod//.
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!! This is another solution
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Here the `$reveal` widget has been used! This is a little longer code in comparison to the above solution.
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See for more infor [[BTC|https://groups.google.com/d/msg/tiddlywiki/9QQvkJkLogA/xDWozyJRBgAJ]].
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```
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\define is-newer(TidA, TidB)
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<$set name="tidAMod" value={{{ [[$TidA$]get[modified]] }}}>
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<$set name="tidBMod" value={{{ [[$TidB$]get[modified]] }}}>
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<$reveal type="match" text="yes" default={{{ [<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidBMod>addprefix[yes]removesuffix<tidAMod>] ~[[no]] }}}>
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$TidA$ is newer
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</$reveal>
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<$reveal type="match" text="no" default={{{ [<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidBMod>addprefix[yes]removesuffix<tidAMod>] ~[[no]] }}}>
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$TidB$ is newer
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</$reveal>
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</$set>
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</$set>
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\end
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```

‎tiddlers/Create Tiddler with Sequence Number.tid‎

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created: 20190222064439458
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creator: Mohammad
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keywords: create tiddler sequence number
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modified: 20190316114914237
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modifier: Mohammad
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responder: Mohammad
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tags: exmp50 solution
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title: Create Tiddler with Sequence Number
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type: text/vnd.tiddlywiki
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url: https://groups.google.com/d/msg/tiddlywiki/3_Xacb7H1p0/BN73J04iAQAJ
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Assume you want to create tiddlers all tagged with say `myTag` and have unique title with ordinal number.
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So
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* tiddlers have title like `myTiddler-1`
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* tiddlers all tagged with `myTag`
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```
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\define newTitle() myTiddler-{{{[tag[myTag]count[]add[1]]}}}
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\define newTiddler()
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<$wikify name="myTitle" text="<<newTitle>>" >
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<$action-createtiddler $basetitle=<<myTitle>> tags="myTag" />
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</$wikify>
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\end
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```
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Then use it like below
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```
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<$button actions=<<newTiddler>>>
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Create a new tiddler
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</$button>
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```
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!!! Remarks
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* The `wikify` widget, calls newTitle macro, creates a new title using filter transclusion and store it in myTitle variable.
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* The `action-createtiddler` creates a new tiddler using myTitle and myTag.
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!! Issues and solution
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[[Thomas Elmiger|https://groups.google.com/d/msg/tiddlywiki/3_Xacb7H1p0/KSYPzQguAQAJ]] states that if some tiddlers deleted in this between, the above code may overwrite the previous ones. Assume you have myTiddler-1, myTiddler-2, and myTiddler-3. Now you delete myTiddler-2 abd then create another, the current code sees there is two tiddler, so it creates the next and overwrite myTiddler-3.
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!!! Solution
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* If myTiddler-2 deleted, the code will create myTiddler-3 1. So there is no risk to overwrite
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* To overcome this issue, the below recursive macro take cares of this issue as below
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```
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\define newTitle() myTiddler-{{{[tag[myTag]count[]add[$(inc)$]]}}}
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\define newTiddler(n:0)
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<$set name="inc" value={{{ [<__n__>add[1]] }}}>
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<$wikify name="myTitle" text="<<newTitle>>" >
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<$list filter="[<myTitle>] +[!has[title]]"
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emptyMessage=""" <$macrocall $name="newTiddler" n=<<inc>> /> """>
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<$action-createtiddler $basetitle=<<myTitle>> tags="myTag" />
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</$list>
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</$wikify>
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</$set>
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\end
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<$button actions=<<newTiddler>>>
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Create a new tiddler
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</$button>
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```
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!!! Remarks
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* The newTiddler macro check if the tiddler is going to created is existed or not. It uses the `list` widget for this purpose.
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* If the tiddler is existed, it calls itself with n icremented by one. This is done by emptyMessage part of `list` widget.
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* The newTiddler macro calls itself as many as time to find a sequence number not in use and then creates the tiddler.
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!!! Solution iii
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[[Mal|https://groups.google.com/d/msg/tiddlywiki/3_Xacb7H1p0/6LqGKyVmAQAJ]] has proposed using zero padded number. A revised version of zero padded number (assuming 3 digits) is given below.
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```
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\define newTitle() myTiddler-{{{[tag[myTag]count[]add[1]addprefix[0000]split[]last[3]join[]]}}}
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\define newTiddler()
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<$wikify name="myTitle" text="<<newTitle>>" >
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<$action-createtiddler $basetitle=<<myTitle>> tags="myTag" />
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</$wikify>
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\end
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```
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See this method in action: [[Example 50: Tiddler Title with Zero Padded Number]].

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