bcbcf50442
Implements "gaps" in string literals. These are escape sequences of the
form `"\" newline whitespace+` that have the interpretation of an empty
string. For example,
```
"this is \
a string"
```
is equivalent to `"this is a string"`. These are modeled after string
continuations in
[Rust](https://doc.rust-lang.org/beta/reference/tokens.html#string-literals).
Implements RFC #2838
20 lines
451 B
Text
20 lines
451 B
Text
"ab"
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"ab"
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"a b"
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"a b"
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"this is a string"
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"this is a string"
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"there are three spaces between the brackets < >"
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"there are three spaces between the brackets < >"
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"this is\n a string with two space indent"
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"ab"
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"ab"
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"ab"
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"ab"
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"ab"
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"ab"
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string_gaps.lean:101:0-104:10: error: <input>:1:4: expecting newline after carriage return
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string_gaps.lean:109:0-112:10: error: <input>:1:3: invalid escape sequence
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"this is line 1\n line 2, indented\nline 3"
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