Poll: useful 'escape' transforms

etc · 2017-12-14 11:39:24

Escape in images is done now, please test.

Also, if someone needs to extend the available functions list in <txp:evaluate query />, here is a tiny Easter eggs plugin. You can also enable CSS parsing and use css forms à la rah_external_output. I don’t think we will enable these “virtual” prefs in 4.7 yet, but feel free to test (at your own risk).

# Name: etc_easter_eggs v0.1 
# Type: Admin/Public plugin
# 
# Author: 
# URL: 
# Recommended load order: 5

# .....................................................................
# This is a plugin for Textpattern CMS - http://textpattern.com/
# To install: textpattern > admin > plugins
# Paste the following text into the 'Install plugin' box:
# .....................................................................

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phiw13 · 2017-12-14 12:17:03

etc wrote #308307:

Escape in images is done now, please test.

Will do so tomorrow morning :-)

phiw13 · 2017-12-15 12:43:45

etc wrote #308307:

Escape in images is done now, please test.

It works nicely. Of course (and this goes for any place where escape="textile" is used), now we have that nice side effect that the string to which it is applied is wrapped in a .
so for my example above, the output is:

<figcaption><p>a <em>test</em> image - something <strong>bold<strong></p></figcaption>

Nothing annoying for my use case, though.

—-
BTW – speaking of evaluate, I spotted this in the templates for the Textpattern main website:

width="<txp:evaluate query='ceiling(<txp:image_info type="w" />div2)' />"

Amazingly, I even manage to understand what it does… A question though, does the number in the div2 need to be an integer? Or can it be something like div1.5 ? It did not immediately work in a quick test (the output was blank), but then I had some other issues with what I was trying and I did not have time to investigate that part further. Populating the srcset attribute with multiple sizes can be giant pain.

etc · 2017-12-15 13:17:03

phiw13 wrote #308313:

It works nicely. Of course (and this goes for any place where escape="textile" is used), now we have that nice side effect that the string to which it is applied is wrapped in a .

Dunno what to do with this, prepend a space, perhaps?

<txp:evaluate escape="textile" wraptag="figcaption"> <txp:image_info type="caption" /></txp:evaluate>

BTW – speaking of evaluate, … does the number in the div2 need to be an integer?

No, <txp:evaluate query='ceiling(2.718 div 1.618)' /> is fine.

phiw13 · 2017-12-15 13:45:48

etc wrote #308314:

Dunno what to do with this, prepend a space, perhaps?

<txp:evaluate escape="textile" wraptag="figcaption"> <txp:image_info type="caption" /></txp:evaluate>…

Winner! <txp:evaluate /> is truly magic.

No, <txp:evaluate query='ceiling(2.718 div 1.618)' /> is fine.

Great, thanks. I’ll play with that.

Bloke · 2017-12-15 14:48:11

phiw13 wrote #308315:

Winner! <txp:evaluate /> is truly magic.

Seconded!

philwareham · 2017-12-15 15:13:54

I think the evaluate tag doc probably needs to be fleshed out a bit further. Doesn’t seem to capture how useful this tag is right now (and I don’t fully understand the tag myself so I can’t write about it).

etc · 2017-12-17 16:11:05

etc wrote #308314:

Dunno what to do with this, prepend a space, perhaps?

<txp:evaluate escape="textile" wraptag="figcaption"> <txp:image_info type="caption" /></txp:evaluate>

Another possibility is to consider any undocumented escape value xyz as “unwrap <xyz /> tag”. Then the example above would become

<txp:image_info type="caption" escape="textile, p" wraptag="figcaption" />

A working commit is ready, I’m just not sure whether this is not too confusing.

Edit: BTW, escape="img" would mean “remove images” (from Textile-formatted text), which could be handy in excerpts.

phiw13 · 2017-12-17 22:48:27

etc wrote #308318:

Another possibility is to consider any undocumented escape value xyz as “unwrap <xyz /> tag”.

… I’m just not sure whether this is not too confusing.

That is certainly interesting, and powerful. Confusing? Just a little, at first sight.

(I find myself increasingly in need to document my code snippets. The other day I was looking at some category related snippet that I coded some month ago. I had to read it over a few times before understanding what I intended to do).

etc · 2017-12-18 09:14:51

Bloke wrote #308299:

Possibly some way to remove newlines but preserve spaces? Is that helpful, as distinct from trim?

Yes, I think, e.g. for “inline” Textile. I have added implode value (the name to debate) that preg-replaces \s+ with a space and also prepends a space. So,

*This* is

a _test_

becomes first (space)*This* is a _test_ and then This is a test when passed through escape="implode, textile".

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#21 2017-12-14 11:39:24

Re: Poll: useful 'escape' transforms

#22 2017-12-14 12:17:03

Re: Poll: useful 'escape' transforms

etc wrote #308307:

#23 2017-12-15 12:43:45

Re: Poll: useful 'escape' transforms

etc wrote #308307:

#24 2017-12-15 13:17:03

Re: Poll: useful 'escape' transforms

phiw13 wrote #308313:

#25 2017-12-15 13:45:48

Re: Poll: useful 'escape' transforms

etc wrote #308314:

#26 2017-12-15 14:48:11

Re: Poll: useful 'escape' transforms

phiw13 wrote #308315:

#27 2017-12-15 15:13:54

Re: Poll: useful 'escape' transforms

#28 2017-12-17 16:11:05

Re: Poll: useful 'escape' transforms

etc wrote #308314:

#29 2017-12-17 22:48:27

Re: Poll: useful 'escape' transforms

etc wrote #308318:

#30 2017-12-18 09:14:51

Re: Poll: useful 'escape' transforms

Bloke wrote #308299:

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