Unicode symbols cannot be displayed properly in 1 character width

Thanks for filing an issue! Please answer the questions below so I can help you.

  • iTerm2 version: 3.3.9
  • OS version: 10.14.6
  • Attach com.googlecode.iterm2.plist here (drag-drop from finder into this window)
  • Attach a debug log, if possible. Instructions at https://iterm2.com/debuglog
  • Are you reporting a performance issue, excessive CPU usage, or a hang? No
  • Are you reporting a crash? No
  • Are you reporting excessive memory usage? No

Detailed steps to reproduce the problem:

  1. run echo "a⚠a⚽a⚯a錖a" in iTerm2

What happened: unicode symbols (⚠, ⚯) overlapped on the neighboring character a, as comparison, emoji and CJK characters did not behave the same. image

What should have happened: ⚠ and ⚯ are filled properly in the 1 character space. Below is how Kitty displayed for the same characters: image

Note:

  • ⚠ and ⚯ are both defined as Narrow in EastAsianWidth.txt
  • iTerm2 and Kitty both use the font “mononoki Nerd Font Mono”
  • iTerm2 has "Use Unicode version 9+ widths" enabled