* danielsh/docs-copyedit-v1:
  docs copyedit: minor: Spelling/punctuation fix.
  docs copyedit: Rewrap to 80 columns, part 4.
  docs copyedit: Rewrap to 80 columns, part 3.
  docs copyedit: Rewrap to 80 columns, part 2.
  docs copyedit: Clarify tagline.
  docs copyedit: minor.
  docs copyedit: Review toplevel and tests README.md files.
  docs copyedit: Rewrap to 80 columns.
  docs copyedit: Restyle bold-italic to fixed-width.
  docs copyedit: Port 6d93ea07fd to the other highlighters' README's.
  docs copyedit: Whitespace.

Restore zsh URL removed a few commits ago.

In particular, tests were relying on the harness to provide a sandbox working
directory, but the perf harness wasn't providing that.

At this time, no user-visible consequences are known.

Change quoting to only quote the shell variable, not the make variable.  This
allows the leading '~' to be unescaped for make's sh to expand.

Followup to b1619c0013.

Patch-by: Matthew Martin

- Install the top-level README.md, which wasn't installed before.
- Install docs to /usr/local/share/doc rather than /usr/local/share.

Done in c30301d474 and
c687bddea3 for other tests.

Fixes zsh-users/zsh-syntax-highlighting#101.

Followup to c015339202.

Suggested-by: Matthew Martin

Fixes zsh-users/zsh-syntax-highlighting#162.

Fixes zsh-users/zsh-syntax-highlighting#109.

Similar to 59fbdda64c in the 'main' highlighter.

This builds upon the test harness auto-cleaned-up directories work (c01533920).

There's simply no reason to use such names, now that the filename is no longer
itself test data.

Fixes zsh-users/zsh-syntax-highlighting#182.
Prerequisite for testing issue #228.

* tests/test-highlighting.zsh
  (run_test): Move functionality to run_test_internal; make run_test be a wrapper
    that handles creating and cleaning up the tempdir.

* tests/README.md: Document the new feature.

* "highlighters/main/test-data/path-space- .zsh"
* highlighters/main/test-data/path-tilde-named.zsh
* highlighters/main/test-data/path.zsh
    Change test data to not depend on being run from the source directory.

Followup to c0dafd1d850e582291b41d693369794d1ea31343, which changed the highlight of
those ')'s from <nothing> to [reserved-word].