Support split view in LazyGit/static pager output

[JannikWempe]

Summary

When using Hunk as a LazyGit custom pager, hunk pager --mode split still renders stacked output.

Reproduction

Configure LazyGit with Hunk as a pager:

git:
  pagers:
    - colorArg: always
      pager: hunk pager --mode split --line-numbers

Open a diff in LazyGit.

Expected behavior

Hunk renders a non-interactive side-by-side/split diff in LazyGit, similar in spirit to delta --side-by-side --paging=never.

Actual behavior

Hunk renders stacked rows, even though --mode split is provided.

Likely cause

LazyGit launches pagers in a captured pager host environment, so Hunk correctly avoids launching the interactive TUI and uses the static pager path added in #271.

That static renderer currently always builds stack rows:

• src/core/startup.ts detects captured pager hosts and returns static-diff-pager
• src/ui/staticDiffPager.ts renders via buildStackRows(...)

So --mode split is parsed, but it is not honored by the static renderer.

Related

• question: how to use with lazygit? #253
• fix(pager): render static diffs in captured pagers #271
• 100% CPU usage by less under lazygit #337