New functions: wordplus, fieldplus

[yoavnir]

wordplus(s,d[,l]) returns the word or words following or preceding the first word in the input line matching s.

For example, if the input line looks like this:

“Though thy crest be shorn and shaven, thou,” I said, “art sure no craven,

Then,

• wordplus("shorn", 1) = and
• wordplus("shorn", 2) = shaven,
• wordplus("shorn", 0) = shorn
• wordplus("shorn", -1) = be
• wordplus("shorn", -5) - error
• wordplus("shorn", 2, 3) = shaven, thou, "I

Similar for fieldplus

[yoavnir]

Let's rename these:

• wplus - word plus
• fplus - field plus
• splus - search plus, so just find something.

The first word/field/character of the found thing is "1"

So,

• splus("gh", 0) is g
• splus("gh", 1) is h
• splus("gh", 3) is t

[yoavnir]

s in splus stands for search