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docs: add FAQ for error caused by empty braces in find

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See #95, #1109, #1468, #2206, #2840, #4202, etc.
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David Adam 2017-07-09 14:10:09 +08:00
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doc_src/faq.hdr
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@ -23,6 +23,7 @@
- <a href='#faq-titlebar'>I'm seeing weird output before each prompt when using screen. What's wrong?</a>
- <a href='#faq-greeting'>How do I change the greeting message?</a>
- <a href='#faq-history'>Why doesn't history substitution ("!$" etc.) work?</a>
- <a href='#faq-find-braces'>Why do I get a missing argument error with `find ... {}`?</a>
- <a href='#faq-cd-minus'>How to make `-` a shortcut for `cd -`?</a>
- <a href='#faq-uninstalling'>How do I uninstall fish?</a>
- <a href='#faq-third-party'>Where can I find extra tools for fish?</a>
@ -223,6 +224,21 @@ Fish history recall is very simple yet effective:
See <a href='index.html#editor'>documentation</a> for more details about line editing in fish.
<hr>
\section faq-find-braces Why do I get a missing argument error with `find ... {}`?
Running `find ... -exec ... {}` produces an error:
find: missing argument to '-exec'
The problem is caused by the empty braces, which are subject to <a href="index.html#expand-brace">brace expansion</a>.
Quote the empty braces to achieve the desired effect:
\fish{cli-dark}
find ... -exec ... '{{}}'
\endfish
<hr>
\section faq-cd-minus How to make `-` a shortcut for `cd -`?