As pointed out by nico, we should unconditionally disable breaking of
long words in comments. It is unlikely long words that are in comments
should be split (like pathnames).
Long file names, especially with hyphens will get incorrectly wrapped by
the comment method. Pass has_path=True to prevent this type of wrapping.
This is mainly so that longer path names can show up in comments on
their on line without breaking them up.
Instead of bootstrapping through a separate script, instead make
configure.py able to either generate a build.ninja *or* just execute
all the computed commands to build a ninja binary.
The last line would sometimes be needlessly longer than the layout
width. One example is line 67 in the build.ninja generated by
ninja's own configure.py: Before this patch, ninja_syntax would
create a 81 character line.
Revert the main loop changes made in 2e7ab75142,
and add just a few lines to the original main loop to make '$ ' escaping work.
Add several new tests, and make the existing tests pass again.
Introduce a rule attribute "generator" which, if present, specifies
that this rule is used to re-invoke the generator program. Files built
using generator rules are treated specially in two ways: firstly,
they will not be rebuilt if the command line changes; and secondly,
they are not cleaned by default.
A command line flag "-g" is introduced for the clean tool, which
causes it to remove generator files.
Fixes issue #102.
