WIP user-programmable registers

[rolandwalker]

RFC.

Summary

• each register is named by a single ASCII letter
• :set-register r %(commit)
• :echo %(register:r)
• !=(r)echo capture first line of arbitrary shell command

Example: arbitrary diffs

• :bind main P :set-register c %(commit)
• :bind main W :exec !git diff --color-words %(register:c) %(commit)
• P to pick commit
• move to new commit
• W to view arbitrary word diff

Example: search diff content

cat > ~/.tigrc.deepsearch.script
:set-register q Apple_Terminal
:exec =(c)git log -i --format='%H' -G '%(register:q)'
:goto %(register:c)
:enter
^D

• :bind main <Esc>/ :script ~/.tigrc.deepsearch.script

Example 2 would work better if

• %(prompt) was available within scripts: script would begin with :set-register q %(prompt/)
• ordinary / search could accept expansions: script would end with :eval /%(register:q)

Incidentally my real usecase is like Example 2 but with a full-text sqlite index of diff content.

[jonas]

Very interesting. I will probably wait with merging such a big change until I manage to release all the other good stuff from you.