etoolbox ifstrequal repeated output

[shea12shea12]

Hello,

I am attempting to use etoolbox for various logical operators to conditionally write text. I can't seem to understand how \ifstrequal behaves. Specifically, I am getting two outputs when a condition is met. Is this intended? Am I using this incorrectly? I am not sure how I could provide the output of my working example, but I get:

Test1: TRUETRUE
Test2: FALSEFALSE

I have previously posted this issue here: LINK, and was referred to report this issue to the pandoc github.

Thank you in advance for taking the time to read and reply.

-Alan

Working Example in Rmarkdown:

---

output: pdf_document
header-includes:

• \usepackage{etoolbox}

---

Test1: \ifstrequal{hello}{hello}{TRUE}{FALSE}

Test2: \ifstrequal{hello}{world}{TRUE}{FALSE}

edit: excuse me as I can't seem to be able to properly mark the above as code

[yihui]

To save time for Pandoc maintainers, here is the minimal reproducible example. With the input test.md:

Test1: \ifstrequal{hello}{hello}{TRUE}{FALSE}

Test2: \ifstrequal{hello}{world}{TRUE}{FALSE}

If we run the command pandoc -f markdown -t latex test.md, the output will be:

Test1: \ifstrequal{hello}{hello}{TRUE}{FALSE}TRUE

Test2: \ifstrequal{hello}{world}{TRUE}{FALSE}FALSE

The expected output should be identical to the Markdown source above.

[jgm]

 % pandoc -f markdown -t native
 \ifstrequal{hello}{hello}{TRUE}{FALSE}
[ Para
    [ RawInline
        (Format "tex") "\\ifstrequal{hello}{hello}{TRUE}{FALSE}TRUE"
    ]
]

So this really concerns the markdown reader, or the functions from the LaTeX reader it invokes.

I guess the problem is the odd way in which we handle \ifstrequal: https://github.com/jgm/pandoc/blob/main/src/Text/Pandoc/Readers/LaTeX.hs#L569-L580

[shea12shea12]

Interesting,
is this something that can be fixed, or perhaps there is an alternative to \ifstrequal?

-Alan

[jgm]

I'm thinking about how to fix it.

[jgm]

Here's a similar case:

% pandoc -fmarkdown -t native                 
\iftrue HI \else LO \fi
^D
[ Para
    [ RawInline (Format "tex") "HI"
    , Space
    , RawInline (Format "tex") "\\else "
    , Str "LO"
    , Space
    , RawInline (Format "tex") "\\fi"
    ]
]

The \iftrue has disappeared.