On Saturday, 21 October 2017 at 22:50:51 UTC, Walter Bright wrote:
What's happening here is each of the operands of || are considered to be separate statements as far as coverage analysis goes. It becomes clearer if it is reformatted as:


1|    x = 2;
1|    if (x == 1 ||
1|        x == 2)

or:

3|    x = 2; if (x == 1 || x == 2)

What about (adding a flag) making coverage operate at the expression level instead? Meaning that each coverage result would be associated with a column offset and length aswell as the line number.

Of course the program would run much slower...

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