neovim / neovim / 25687

77%

push

travis-ci

tui: libtermkey: force CSI driver for mouse input #7948

Fixes #7932

Nvim (tui.c) always enables SGR mouse (TUIData.unibi_ext.enable_mouse).
But if libtermkey sees key_mouse (kmous) in terminfo its terminfo driver
(driver-ti.c) will be activated, which by accident only supports X10
protocol. The libtermkey CSI driver (driver-csi.c), in contrast,
supports SGR.

We can force libtermkey to ignore the terminfo key_mouse entry by
returning NULL in the tui_tk_ti_getstr hook. That forces the CSI driver.

What is the effect of returning NULL from `tui_tk_ti_getstr()`?
- libtermkey `driver-ti.c:load_terminfo()` skips the entry.
- `termkey.c:peekkey()` iterates through all drivers, it finds
  `TERMKEY_RES_NONE` for the ti driver and falls back to the CSI driver.

2 of 2 new or added lines in 1 file covered. (100.0%)

91245 of 115151 relevant lines covered (79.24%)

204232.49 hits per line