Trivial changes: whitespace and modes. Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>

acme: do not pass null pointers where disallowed The C standards disallow passing null pointers to memmove and memcmp. Change-Id: I1c88c2adbc32a23ef742f206038b8f7c4e0540c7

acme: check file content before declaring file "modified since last read" Bad remote file systems can change mtime unexpectedly, and then there is the problem that git rebase and similar operations like to change the files and then change them back, modifying the mtimes but not the content. Avoid spurious Put errors on both of those by checking file content. (False positive "modified since last read" make the real ones difficult to notice.)

acme: add log file in acme root directory Reading /mnt/acme/log reports a log of window create, put, and delete events, as they happen. It blocks until the next event is available. Example log output: 8 new /Users/rsc/foo.go 8 put /Users/rsc/foo.go 8 del /Users/rsc/foo.go This lets acme-aware programs react to file writes, for example compiling code, running a test, or updating an import block. TBR=r R=r https://codereview.appspot.com/89560044

acme: mouse movement for Del If the mouse was in the tag of the old window, it was most likely pointing at Del. If bringing up a new window from below and not moving the mouse somewhere else, adjust it so that it ends up pointing at Del in the replacement window's tag too. This makes it easy to Del a sequence of windows in a column, from top to bottom. http://www.youtube.com/watch?v=ET8w6RT6u5M R=r http://codereview.appspot.com/6558047

acme: sync against Plan 9, remove -$ option

acme: fix memory leak in warning (Michael Teichgräber)

exit gracefully on error

add errors file

changes from plan 9

allow last column to be deleted

undo the madness.

$foo in tags - here only for reference.

SunOS can rot in hell.

Today's changes. More changes.