Improved segment adjacency

[henrypotgieter]

This PR allows for better blending of tmux-mem-cpu-load with adjacent segments so that you are able to specify the foreground/background colour to achieve the look you desire with your status line. Designed best to work with a recent approved PR to tmux-powerline: erikw/tmux-powerline#302

Prior to this change, embedding the tmux-mem-cpu-load segment within your statusbar when using tmux-powerline may have looked like this:

When using the "segment-left" (-l) and "segment-right" (-r) options to match the appropriate colors with adjacent segments we can achieve the following look.

In the above usage example, -l would be passed a value of 52 and -r a value of 33, resulting in the background color of the first character in the tmux-mem-cpu-load segment being set to 52 and the foregroudn color of the last character being set to 33, eg:

tmux-mem-cpu-load -q -v -l 52 -r 33

This combines with options available to tmux-powerline after the aforementioned PR, such as the following

"disk_usage_cust 52 123 ${TMUX_POWERLINE_SEPARATOR_LEFT_BOLD} 52 123 right_disable" \ "tmux_mem_cpu_load_cust 52 234 ${TMUX_POWERLINE_SEPARATOR_LEFT_BOLD} 52 234 both_disable separator_disable" \ "batt_cust 33 154 ${TMUX_POWERLINE_SEPARATOR_LEFT_BOLD} 16 33 N separator_disable" \

The result is a powerline statusbar that appears seamless, where dynamic color changes which are part of tmux-mem-cpu-load blend well with the adjacent non-dynamic segment background colors. The options work with both left and right positions (-p & -q) of tmux-mem-cpu-load and can be set up to work if only one side of the tmux-mem-cpu-load segment has an adjacent segment or if it is wrapped with segments on both sides.

[thewtex]

@henrypotgieter very cool!! 😎

Minor requests: in the documentation, could it please be indicated that the type of the color is an integer, e.g. color -> integer color, and add a more detailed description in the README on how to identify the desired integer color.

Also, could you please add a short example, description from your PR description to the README so folks are away of how to use the tools together.

Thanks!

[henrypotgieter]

No problem! Made some updates to the usage output and added some details to the README showing the before/after examples and how to achieve them in conjunction with Tmux Powerline.

[thewtex]

@henrypotgieter thanks!!