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If...then...else...endif -- and...or

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1marc1

Feb 14, 2020; 12:54am

If...then...else...endif -- and...or

Hi Team,

I am not sure how difficult it would be to implement, but it would be very useful to have the ability to do something like this:

:myvar: blue
ifeval::[ "{myvar}" == "blue" OR "{myvar}" == "red" ]
This is for categories that are blue or red.
else::[]
This is for categories that are not blue or red
endif::[]

At the moment, I believe the only way to achieve the above is by doing:

:myvar: blue
ifeval::[ "{myvar}" == "blue" ]
This is for categories that are blue or red.
endif::[]

ifeval::[ "{myvar}" == "red" ]
This is for categories that are blue or red.
endif::[]

ifeval::[ "{myvar}" != "blue" ]
ifeval::[ "{myvar}" != "red" ]
This is for categories that are not blue.
endif::[]
endif::[]

Marc

David Jencks

Feb 14, 2020; 1:53am

Re: If...then...else...endif -- and...or

I didn’t try this, but I’d expect something like this might work:

ifeval::["{myvar}" == “blue”]

:myvarblue: yes

endif::[]

feval::["{myvar}" == “red”]

:myvarred: yes

endif::[]

:myvarblueorred: {myvarblue}{myvarred}

ifeval::[ “{myvarblueorred}” != “” ]

This is for categories that are blue or red.

endif::[]

ifeval::[ “{myvarblueorred}” ==“” ]

This is for categories that are neither blue nor red

endif::[]

“AND” could be done similarly (e..g == ‘yeses”)

At this point I have no opinion on whether your suggestion might be a good idea or not, but there might be a slightly less inconvenient workaround available now.

david jencks

On Feb 13, 2020, at 4:54 PM, 1marc1 [via Asciidoctor :: Discussion] <[hidden email]> wrote:
Hi Team,

I am not sure how difficult it would be to implement, but it would be very useful to have the ability to do something like this:
:myvar: blue
ifeval::[ "{myvar}" == "blue" OR "{myvar}" == "red" ]
This is for categories that are blue or red.
else::[]
This is for categories that are not blue or red
endif::[]
At the moment, I believe the only way to achieve the above is by doing:
:myvar: blue
ifeval::[ "{myvar}" == "blue" ]
This is for categories that are blue or red.
endif::[]

ifeval::[ "{myvar}" == "red" ]
This is for categories that are blue or red.
endif::[]

ifeval::[ "{myvar}" != "blue" ]
ifeval::[ "{myvar}" != "red" ]
This is for categories that are not blue.
endif::[]
endif::[]
Marc

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halol

Feb 27, 2020; 1:58pm

Re: If...then...else...endif -- and...or

In reply to this post by 1marc1

I would love to see this feature as well. Without it, ifeval is often difficult to use, even if there are workarounds. I tend to use something such as:

For the OR:

:myvar: blue
ifeval::[ "{myvar}" == "blue" ]
:group1:
endif::[]

ifeval::[ "{myvar}" == "red" ]
:group1:
endif::[]

ifdef::group1[]
For blue or red
endif::[]

ifndef::group1[]
For not blue and not red
endif::[]

For the AND:

:myvar1: blue
:myvar2: green
ifeval::[ "{myvar1}" == "blue" ]
ifeval::[ "{myvar2}" == "red" ]
:group2:
endif::[]
endif::[]

ifdef::group2[]
For var1 = blue and var2 = red
endif::[]

and so on.

It is slightly off-topic, but a long-form for ifeval would also be nice if possible.