Tier 6 · Adeptreplace

Squash The Gaps

Collapse every run of whitespace down to a single space.

Your first replace challenge: you supply a pattern and a replacement string, and the input is rewritten. Note that replacing only the first run is not enough — the g flag earns its one character here.

quantifiers replace

Your pattern0 chars · par 5

Flags

Replacement — $1, $2 refer to your capture groups

Start typing — tests run as you go.

Test cases

a b→ "a b"
hello world again→ "hello world again"
tab␉␉here→ "tab here"
··padded··→ " padded "
nogaps→ "nogaps"

+ 3 hidden tests, checked when you submit. They are what stops a pattern that only fits the examples above.