f-log

So there is an edge case where that does not work :(

luckily it shouldn't come up too often.

What was all that silliness about?

The less than sign, greater than sign and ampersand symbol were showing correctly on the page as long as they were not in a block.

When they were in blocks the highlight.js was double encoding the entities.

There seems no way around this so I just added a quick regex

let result = hljs.highlightAuto(target).value;
pattern = new RegExp('&', 'sg');
result = result.replace(pattern, '&');

That fixed it.

This is a test, please stay calm, or at least quiet and don't fidget or highlight anything...

&&&&
>>>>
<<<<

&<>

If you or any one within this dimension have suffered unexplained desire for sugar during this test, then please seek chocolate immediately.

This is a test, please stay calm, or at least quiet and don't fidget...

&&&&
>>>>
<<<<

&<>

If you or any one on the planet Earth have suffered an unexpected increase in barometric pressure during this test, then please seek atmospheric assistance immediately.

This is a test, please stay calm, or at least quiet...

&&&&
>>>>
<<<<

&<>

If you or any one with a 50 mile radius have suffered a lack of gravity during this test, then please seek physical assistance immediately.

This is a test, please stay calm...

&&&&
>>>>
<<<<

&<>

If you or any of your appendages have suffered serious burns during this test, then please seek medial assistance immediately.

Been doing some scripting at work with sed (command line Stream EDitor.

Learned a few tricks that I want to immortalise on this flog.

Let's create a test file with three distinct lines.

echo "line 1 content A" >> /tmp/file
echo "line 2 content B" >> /tmp/file
echo "line 3 content C" >> /tmp/file
cat /tmp/file
line 1 content A
line 2 content B
line 3 content C

and then run

cat /tmp/file | sed -re '/line 1/p;/line 3/d;s/line 1/line ONE/'

to get the output of

line 1 content A
line ONE content A
line 2 content B

That sed command breaks down into

1. Find a line that matches "line 1" and then P rint it
2. Find a line that matches "line 3 and D elete it
3. Find the text "line 1" and S ubstitute it with the text "line One"

This is incredibly powerful and I have been using it to migrate one programming framework to another.

Make backups of lines that need changing and marking them as comments. Deleting unused lines completely. Reformatting syntax.