Useful snippets

    CSS position floatish relative

    Wed 01. April 2026 | 2026-04-01

    https://css-tricks.com/almanac/properties/p/position/#absolute

    To make the child element positioned absolutely from its parent element we need to set this on the parent element itself:

    .element {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
    }
    
    .parent {
      position: relative;
    }

    Now properties such as left, right, bottom and top will refer to the parent element, so that if we make the child element transparent we can see it sitting right at the bottom of the parent:

    markdown

    Tue 10. March 2026 | 2026-03-10

    <mark>Highlighted text</mark>

    ==Highlighted text==

    Highlighted text

    ==Highlighted text==

    [!NOTE] En note

    [!WARNING] Warning!!

    [!IMPORTANT] !!!!!!

    Check if a file exists (pre-push example)

    Tue 03. March 2026 | 2026-03-03

    Bash

    Check existence

    lpo() {
      if [[ -f ".git/hooks/pre-push" ]]; then
        echo ".git/hooks/pre-push was found:"
        echo "pre-push is activated"
      else
        if [[ -f ".git/hooks/pre-push.sample" ]]; then
          echo ".git/hooks/pre-push was not found:"
          echo "but .git/hooks/pre-push.sample was found:"
          echo "pre-push is deactivated"
        else
          echo "Hmmmmm"
        fi
      fi
    }

    Nvim edit file

    po() {
      if [[ -f ".git/hooks/pre-push" ]]; then
        echo ".git/hooks/pre-push was found:"
        nvim .git/hooks/pre-push
      else
        if [[ -f ".git/hooks/pre-push.sample" ]]; then
          echo ".git/hooks/pre-push was not found:"
          echo "but .git/hooks/pre-push.sample was found:"
          nvim .git/hooks/pre-push.sample
        else
          echo "Hmmmmm"
        fi
      fi
    }

    Lua nvim edit file

    function file_exists(name)
       local f=io.open(name,"r")
       if f~=nil then io.close(f) return true else return false end
    end
    
    function open_prepush()
      if file_exists(".git/hooks/pre-push") then
        vim.cmd("vsplit .git/hooks/pre-push")
      elseif file_exists(".git/hooks/pre-push.sample") then
        vim.cmd("vsplit .git/hooks/pre-push.sample")
      else
        vim.cmd("echo 'Hmmmmm'")
      end
    end
    
    vim.keymap.set("n", "<leader><leader>po", open_prepush, { desc = "Open pre-push a new split" })

    git hooks

    Wed 25. February 2026 | 2026-02-25

    To activate pre-push, rename .git/hooks/pre-push.sample to .git/hooks/pre-push


    Example script:

    branch_name=$(git symbolic-ref HEAD 2>/dev/null)
    
    allowed_branch_name="refs/heads/"
    
    allowed_branch_name+="min-branch"
    
    if [ "$branch_name" != "$allowed_branch_name" ]; then
      echo "Current branch: ${branch_name}"
      echo "Allowed branch: ${allowed_branch_name}"
      echo
      echo "You can't push directly to this branch." # also prevents --force-with-lease pushes
      exit 1
    fi

    should work given that this command:

    git symbolic-ref HEAD 2>/dev/null

    gives: refs/heads/min-branch

    and:

    git symbolic-ref HEAD 2>/dev/null | cut -d"/" -f 3

    gives min-branch