tog regress: TAB instruction + test for diff J keymap Add the TAB instruction to the test harness, and a test case for the previous commit: scroll down the log from the diff view with the J keymap when on the last loaded commit. ok stsp@

tog: resize log view if toggling fullscreen from child view We call resize_log_view() when toggling 'F'ullscreen from the log view, but forgot to do this when toggling fullscreen from a child view if its parent is the log view. This fixes a bug that prevents scrolling down the log view from the diff view with the J keymap if already on the last loaded commit. Regress test in the following commit. ok stsp@

tog: mark HSPLIT_SCALE as float; unbreak regress on i386 On i386 view_split_begin_y() computed a value slightly different than on other arches, breaking the regress. Casting HSPLIT_SCALE as float unbreaks it. Diff from jamsek, committing on his behalf. Thanks!

tog: open screendump file early during regress we can't open arbitrary files after unveil(), and that's a feature! So, open it early and truncate it before use just in case screendump() ends up being called more than once. ok/tweak stsp, ok jamsek

tog: don't check whether stdin is a tty during regress ok stsp, jamsek

tog: don't open /dev/tty during regress as it might not be there (for e.g. if ran under cron). Reuse instead /dev/null since it's not expected to get input from stdin. ok jamsek

tog: always use alternate charset for vertical/horizontal line ncurses(3) will use the line drawing characters from the VT100 alternate graphics character set if the terminal supports this as indicated by termcap/terminfo, otherwise it will fall back to ASCII replacement characters. ok jamsek stsp

tog: teach test harness to count and basic tree tests Add count instruction to the test harness to simulate count modifier compound keys (e.g., 11j), and add basic tests for the tree view. ok stsp@

tog regress: zap needless defines and use "vt220" TERM Also, overwrite - and | unconditionally when capturing screen dumps, and unset TOG_COLORS and TOG_DIFF_ALGORITHM in regress setup. All tweaks suggested by naddy@ ok stsp@

tog regress: use pthread conditions for wait instruction As suggested by stsp, rather than busy wait in the view loop, use pthread conditions to wait for the blame thread to signal completion before drawing the screen. We can add more conditions for other views when needed, but by keeping the general WAIT_FOR_UI instruction and flag, this should make their use context-dependent so we won't need more test harness WAIT_* instructions. ok stsp@

tog: lock mutex if leaving view_loop() on a script read error ok stsp@

tog: tweak blame tog_view deallocation fix from 2ca2f982 Both view_close() and close_blame_view() are called from view_loop() irrespective of error, so only call these from cmd_blame() to ensure the tog_view structure is not leaked when open_blame_view() errors. ok stsp@

tog: blame regress and new test framework wait instruction Basic blame view test required adding the WAIT_FOR_UI instruction to delay screen dumps till the ui has been completely rendered. This will also apply to future test cases such as limited log views and further blame test cases. ok stsp@

tog: rename regress test script envvar As per stsp's idea: use a more descriptive name, and use the TOG_TEST_SCRIPT envvar both in tog.c and the test scripts. ok stsp@

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