• Added rl.needquotes() function to check whether text needs quotes in a command line.
• Changed the terminal.color_emoji setting auto mode to more broadly support accurate width measurements for color emoji (regardless whether the terminal program is capable of actually drawing the color emoji).
• Now clink-diagnostics Ctrl-X,Ctrl-Z automatically analyzes the prompt text for problematic characters, reports them, and offers suggestions for how to solve problems they might be causing.
• Fixed the completion autosuggest strategy so it doesn't provide a suggestion that requires quoting if the command line input is not currently quoted.
• Fixed overly aggressive detection of color emoji (regression introduced in v1.4.7).