Fix lazygit diff pager width for delta

[michaelbarton]

Summary

• Switch lazygit pager config from legacy paging.pager to the modern pagers array format
• Add --width={{columnWidth}} to the delta pager command so delta uses the lazygit panel width instead of the full terminal width
• Fixes side-by-side diff rendering and prevents line wrapping/overflow in the lazygit diff panel

Problem

The previous config used delta --paging=never without passing the panel width. Delta would default to the full terminal width for rendering, but lazygit's diff panel is narrower than the terminal. This caused side-by-side diffs (enabled via [delta] side-by-side = true in gitconfig) to overflow and wrap incorrectly.

Additionally, paging.pager is the legacy config format. The modern pagers array format supports the {{columnWidth}} template variable and enables pager cycling with the | key.

Changes

# Before (legacy format, no width)
paging:
  colorArg: always
  pager: delta --paging=never

# After (modern format, correct panel width)
pagers:
  - pager: delta --paging=never --width={{columnWidth}}

Screenshot

Delta rendering in lazygit with the fix applied:

References

• lazygit Custom Pagers docs
• lazygit #1582 - Delta side-by-side width issue

Test plan

• Open lazygit in a repo with unstaged changes
• Verify delta renders diffs correctly in the diff panel
• Verify side-by-side mode uses the correct panel width (no overflow/wrapping)
• Try cycling pagers with the pipe key (new capability from pagers array format)

https://claude.ai/code/session_012caDs9Cg7i9JKrTeinxsKY