如何使用正则表达式将tex标签转换为php或sed中的html标签？ [关闭]

Question

I have this tex:

hello \o{test} how are you?

I want to convert it into:

hello <span>test</span> how are you?

how?

Answer 1

You may use the following expression:

\\o\{([^}]+)}

• \\o Matches o.
• \{ Matches {.
• ([^}]+) Capturing group. Matches and captures anything other than a }.
• } Matches a }.

Replacing with:

<span>\1<\/span>

Regex demo here.

---

Sed implementation:

$ echo "hello \o{test} how are you?" | sed -r 's/\\o\{([^}]+)}/<span>\1<\/span>/g'
hello <span>test</span> how are you?

---

Php implementation:

<?php
$input_lines="hello \o{test} how are you?";
echo preg_replace("/\\\\o{([^}]+)}/", "<span>$1<\/span>", $input_lines);

Prints:

hello <span>test<\/span> how are you?