On Friday, August 21, 2020 at 6:16:44 AM UTC-7, [email protected] wrote:
>
> Plz check that the newline mark not shown in the quote part after render, 
> why this happpened. 
>
> I think the quote content should be
> export xxxxx
> export xxxxx
> export xxxxx
>
> like this. 
>

As with all web content (not just TiddlyWiki), HTML content is rendered 
"inline", which joins separate lines and reduces multiple spaces to single 
spaces.

Thus, the following:
foo bar
baz    mumble frotz
gronk
snork      snerfle     argle bargle

is displayed as:
foo bar baz mumble frotz gronk snork snerfle argle bargle

Blockquotes in wikitext (see 
https://tiddlywiki.com/#Block%20Quotes%20in%20WikiText) are no exception.

To force a newline within HTML content, it is standard practice to embed 
<br/> where you want the newline to occur.

Of course, this can be somewhat inconvenient when you have multiple lines 
of content for which you want each line to remain separate.

In this case, you can use CSS to control the "white-space" handling, like 
this:
<blockquote style="white-space:pre;">
line one
line two
line three
</blockquote>

You can also accomplish this using a CSS *classname*:
<style> .whitespace { white-space:pre; } </style>

<blockquote class="whitespace">
line one
line two
line three
</blockquote>

The same CSS class technique can also be applied to TW wikitext 
blockquotes, like this:
<style> .whitespace { white-space:pre; } </style>

<<<.whitespace
line1
line2
line3
<<<

Note that, rather than putting the <style>...</style> directly in the 
tiddler content, it is better to put it in a separate tiddler, tagged with 
$:/tags/Stylesheet, which will define the class once for use as many times 
as you like:

1) create a tiddler, e.g., MyStyles, containing:
.whitespace { white-space:pre; }

2) Use that CSS class anywhere you like:
<<<.whitespace
line 1
line 2
line 3
<<< 

enjoy,
-e

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