Saq,
Thanks, That sounds like a possible cause. I may need to test if
$:/status/UserName has text first.
Tony
On Friday, June 5, 2020 at 2:58:23 PM UTC+10, Saq Imtiaz wrote:
>
> Be careful using the field filter operator with a text reference or
> variable as parameter, if they are not defined or empty, it is the same as
> calling it with an empty parameter.
>
> Try the following on empty.html:
>
> [modifier{$:/status/UserName}]
>
> if {$:/status/UserName} is non existent or blank, what you get is every
> tiddler where this field doesn't exist or is blank.
> See https://tiddlywiki.com/#field%20Operator
>
> If S is empty, field will match both of the following:
>>
>> - tiddlers that don't contain field F
>>
>>
>> - tiddlers in which field F exists but has an empty value
>>
>>
>
> On Friday, June 5, 2020 at 6:47:37 AM UTC+2, TonyM wrote:
>>
>> Saq,
>>
>> I did it once again, and it *did not reoccur*, however I have realised I
>> often use a bookmarklet as my first step in any "new" or online wiki.
>>
>> Although my suggestion to make a filter such as below and allowing other
>> plugins to register exclusions.
>> [haschanged[]] -[prefix[$:/temp]] -[prefix[$:/state]] -$:/StoryList -$:/
>> HistoryList -[prefix[$:/Bob]] -[prefix[$:/ServerIP]] -[prefix[$:/
>> WikiSettings]]
>>
>>
>> The bookmarklet was defined with the following filter, ie items changes
>> at the time it was made, the listed tiddler should not be in it, but they
>> seem to appear after the install.
>>
>> [all[]modifier{$:/status/UserName}!prefix[$:/temp]!prefix[$:/state]] -[[$
>> :/HistoryList]] -[[$:/StoryList]] -[[$:/PSaT/bookmarkletMaker/
>> AdvancedSearch]]
>>
>>
>> And while this list does not change the haschanged tiddlers I think it
>> may be changing one of the subtiddlers.
>>
>> I will need to follow this lead further.
>>
>> Thanks
>> Tony
>>
>>
>>
>>
>> On Friday, June 5, 2020 at 2:20:23 PM UTC+10, Saq Imtiaz wrote:
>>>
>>> @Tony what browser and OS are you using?
>>>
>>> Running the filter [haschanged[]] at https://tiddlywiki.com/empty.html in
>>> Linux and the latest Chrome gives me the following:
>>>
>>> $:/StoryList
>>> $:/HistoryList
>>> $:/state/tab--1498284803
>>> $:/temp/advancedsearch
>>>
>>>
>>>
>>> On Friday, June 5, 2020 at 5:57:22 AM UTC+2, TonyM wrote:
>>>>
>>>> Folks,
>>>>
>>>> Some of you would be aware I have had a few problems of late with
>>>> upgrading tiddlywiki. The solution was to get rid of some overwitten
>>>> shadow
>>>> tiddlers.
>>>>
>>>> I had no idea how this had occurred. But suspect I do now.
>>>>
>>>> However I just noted this;
>>>>
>>>> In a new empty.html use the advanced search filter [haschanged[]] and
>>>> this is the result
>>>>
>>>>
>>>> - *$:/library/sjcl.js*
>>>> - *$:/boot/bootprefix.js*
>>>> - *$:/boot/boot.js*
>>>> - *$:/boot/boot.css*
>>>> - *$:/core*
>>>> - *$:/isEncrypted*
>>>> - *$:/themes/tiddlywiki/snowwhite*
>>>> - *$:/themes/tiddlywiki/vanilla*
>>>> - *$:/temp/info-plugin*
>>>> - *$:/status/RequireReloadDueToPluginChange*
>>>> - *$:/StoryList*
>>>> - *$:/HistoryList*
>>>> - *$:/state/tab--1498284803*
>>>> - $:/temp/advancedsearch
>>>>
>>>>
>>>> *Are most of these not "false positives"?*
>>>>
>>>> *Now I must ask the question why are all these flagged as has changed?,*
>>>> especially since many are shadow tiddlers only, or plugins such as core?
>>>>
>>>> Note: I regularly exclude with -[prefix[$:/temp]] -[prefix[$:/state]]
>>>> -$:/StoryList -$:/HistoryList
>>>>
>>>> I have used the has changed filter to export and re-import tiddlers
>>>> when my server or saver has failed in someway, clearly if I do this I
>>>> import and overwrite these tiddlers, a subsequent upgrade will keep them,
>>>> and seems to throw errors and the resulting wiki may be broken.
>>>>
>>>> I also discovered on bob I need to exclude the following or I will also
>>>> may be in grief;
>>>>
>>>>
>>>> - -[prefix[$:/Bob]]
>>>> - -[prefix[$:/ServerIP]]
>>>> - -[prefix[$:/WikiSettings]]
>>>>
>>>> Now I understand these bob tiddlers may need to change.
>>>>
>>>> *However*
>>>> In all wikis you can see using the haschanged operator to escape
>>>> problems with the saving mechanisium is asking from trouble.
>>>>
>>>> Perhaps;
>>>> We could add a filter that does not list haschanges that are not as
>>>> above and allows plugins such as bob to register tiddlers that should not
>>>> be considered when trying to export changes. Excluding system tiddlers is
>>>> not enough if someone is editing system tiddlers even just configuration
>>>> tiddlers.
>>>>
>>>> The following would work if these false positives where not occurring.
>>>>
>>>> [haschanged[]] -[prefix[$:/temp]] -[prefix[$:/state]] -$:/StoryList
>>>> -$:/HistoryList -[prefix[$:/Bob]] -[prefix[$:/ServerIP]]
>>>> -[prefix[$:/WikiSettings]]
>>>>
>>>>
>>>> Regards
>>>> Tony
>>>>
>>>>
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