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

fix gcc 4.7 warnings (thanks Tuncer Ayaz) R=rsc http://codereview.appspot.com/6744053

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: do not redraw body on every tag change fixes #5 http://bitbucket.org/rsc/plan9port/issue/5/ http://groups.google.com/group/plan9port-dev/t/e679347ecaa05cff http://codereview.appspot.com/95041

acme: multiline tag fixes

acme: revise multiline tag code

acme: sync against Plan 9, remove -$ option

acme: tag resize nits

fix tags again

fix too-aggressive tag redraw

Use gcc -ansi -pedantic in 9c. Fix many non-C89-isms.

events buffer need not end in NUL

add chord fix from plan 9

more tweaks