E099: A string or character was opened but never closed

Text in Turf is wrapped in quotes: "hello" for a string, 'a' for a single character. This error means Turf found the opening quote and then ran out of line (or out of file) before it found the matching closing one.

mut greeting: string = "hello;       // the closing " is missingmut letter: char = 'a;                // the closing ' is missing

Add the missing quote:

mut greeting: string = "hello";mut letter: char = 'a';

Two things worth knowing:

• A string can’t continue onto the next line. If you want a line break inside your text, write \n in it: "first line\nsecond line".
• A quote inside your text needs a backslash in front of it, or Turf thinks the text has ended there: "she said \"hi\"".

When this error appears, look at the line it points to first. Very often the quote is right there, one character short of where you meant it to be.

Run turf --explain E099 in a terminal to read this again.