Introduction: The Missing Checkmark ProblemImagine wanting to display U+2717 (✗, BALLOT X) in Windows' traditional console (conhost.exe). You've selected the system's default monospace font Consolas, yet what appears on screen is a boxed question mark—the universal symbol for "character not found." This problem surfaced while using NeoVim, which requires Nerd Fonts for proper icon display. However, even many fonts claiming Nerd Fonts support don't include this particular character.The root cause seems obvious: Consolas simply doesn't contain...