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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://social.wildeboer.net/users/jwildeboer/statuses/113855054619226615">Jan Wildeboer 😷:krulorange: (jwildeboer@social.wildeboer.net)'s status on Sunday, 19-Jan-2025 21:38:31 JST</a><a href="https://social.wildeboer.net/@jwildeboer" title="jwildeboer@social.wildeboer.net"><img src="https://gnusocial.jp/avatar/2767-48-20250205224340.webp" width="48" height="48" alt="Jan Wildeboer 😷:krulorange:" style="position: absolute; left: 0; top: 0;">Jan Wildeboer 😷:krulorange:</a></section><article><p><a href="https://social.wildeboer.net/tags/lazyweb" rel="tag">#lazyweb</a> Weird thing. When using `sed` in a makefile context, its seems to behave slightly different than expected, as explained in [1]. More precise: To capture the end of a line, you normally use $ as the last character in the search expression, but in a makefile context it somehow needs $$. The linked post explains *THAT* it works this way but not *WHY*. This upsets me ;) Can anyone explain what is going on here?</p><p>[1] <a href="https://stackoverflow.com/questions/57301214/why-using-two-dollar-sign-instead-of-just-single-dollar-sign-for-bl" rel="nofollow noreferrer">https://stackoverflow.com/questions/57301214/why-using-two-dollar-sign-instead-of-just-single-dollar-sign-for-bl</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/4403501#notice-8613989">In conversation</a><time datetime="2025-01-19T21:38:31+09:00" title="Sunday, 19-Jan-2025 21:38:31 JST">about a month ago</time> <span>from <span><a href="https://social.wildeboer.net/@jwildeboer/113855054619226615" rel="external" title="Sent from social.wildeboer.net via ActivityPub">social.wildeboer.net</a></span></span><a href="https://social.wildeboer.net/@jwildeboer/113855054619226615">permalink</a><h4>Attachments</h4><ol><li><article><header><div>Domain not in remote thumbnail source whitelist: cdn.sstatic.net</div><h5><a href="https://stackoverflow.com/questions/57301214/why-using-two-dollar-sign-instead-of-just-single-dollar-sign-for-bl">why using "$$" (two dollar sign) instead of just "$" (single dollar sign) for blank line removal in Makefile?</a></h5><div></div></header><div>I met some old Makefile script which was designed to delete blank lines using the sed command. The code itself is pretty easy and straightforward. sed -i -e '/^[ \t]*$$/ d'
I know the ^[ \t]*$ p...</div><footer></footer></article></li></ol></footer></blockquote>

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Jan Wildeboer 😷:krulorange: (jwildeboer@social.wildeboer.net)'s status on Sunday, 19-Jan-2025 21:38:31 JST Jan Wildeboer 😷:krulorange:
#lazyweb Weird thing. When using `sed` in a makefile context, its seems to behave slightly different than expected, as explained in [1]. More precise: To capture the end of a line, you normally use $ as the last character in the search expression, but in a makefile context it somehow needs $$. The linked post explains *THAT* it works this way but not *WHY*. This upsets me ;) Can anyone explain what is going on here?
[1] https://stackoverflow.com/questions/57301214/why-using-two-dollar-sign-instead-of-just-single-dollar-sign-for-bl
In conversationabout a month ago from social.wildeboer.netpermalink
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1. Domain not in remote thumbnail source whitelist: cdn.sstatic.net
  why using "$$" (two dollar sign) instead of just "$" (single dollar sign) for blank line removal in Makefile?
  I met some old Makefile script which was designed to delete blank lines using the sed command. The code itself is pretty easy and straightforward. sed -i -e '/^[ \t]*$$/ d' I know the ^[ \t]*$ p...

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