diff pager not respected when using delta as diff command

[Uroc327]

Describe the bug

By setting diff.pager to less, chezmoi diff gives me one pager including all diffs for all targets. When I do the same when using delta as diff.command, no paging happens.

To reproduce

Using the config

[diff]
    command = "delta"
    args = ["--keep-plus-minus-markers", "--paging", "never"]
    pager = "less"

and executing chezmoi diff when there are multiple files containing changes (larger than one screen).

Expected behavior

I would like to see one single pager containing all the accumulated outputs of the individual delta outputs.

Output of chezmoi doctor

$ chezmoi doctor
RESULT    CHECK                       MESSAGE
ok        version                     v2.57.0, commit v2.57.0, built at 2025-01-06, built by xbps
ok        latest-version              v2.57.0
ok        os-arch                     linux/amd64 (Void)
ok        uname                       Linux TUEILNT-MO-CR2 6.12.9_1 #1 SMP PREEMPT_DYNAMIC Fri Jan 10 00:53:27 UTC 2025 x86_64 GNU/Linux
ok        go-version                  go1.23.4 (gc)
ok        executable                  /usr/bin/chezmoi
ok        config-file                 ~/.config/chezmoi/chezmoi.toml, last modified 2025-01-13T00:33:17+01:00
warning   source-dir                  ~/.local/share/chezmoi is a git working tree (dirty)
ok        suspicious-entries          no suspicious entries
warning   working-tree                ~/.local/share/chezmoi is a git working tree (dirty)
ok        dest-dir                    ~ is a directory
ok        umask                       022
ok        cd-command                  found /usr/bin/zsh
ok        cd-args                     /usr/bin/zsh
ok        diff-command                found /usr/bin/delta
ok        edit-command                found /usr/bin/nvim
ok        edit-args                   /usr/bin/nvim
ok        git-command                 found /usr/bin/git, version 2.47.1
ok        merge-command               found /usr/bin/nvim
ok        shell-command               found /usr/bin/zsh
ok        shell-args                  /usr/bin/zsh
info      age-command                 age not found in $PATH
ok        gpg-command                 found /usr/bin/gpg, version 2.4.5
info      pinentry-command            not set
info      1password-command           op not found in $PATH
info      bitwarden-command           bw not found in $PATH
info      bitwarden-secrets-command   bws not found in $PATH
info      dashlane-command            dcli not found in $PATH
info      doppler-command             doppler not found in $PATH
info      gopass-command              gopass not found in $PATH
ok        keepassxc-command           found /usr/bin/keepassxc-cli, version 2.7.9
info      keepassxc-db                not set
info      keeper-command              keeper not found in $PATH
info      lastpass-command            lpass not found in $PATH
info      pass-command                pass not found in $PATH
info      passhole-command            ph not found in $PATH
info      rbw-command                 rbw not found in $PATH
info      vault-command               vault not found in $PATH
info      vlt-command                 vlt not found in $PATH
info      secret-command              not set

Additional context

I also tried settings diff.pager to delta as well. In fact, setting diff.pager to rev or more doesn't make any difference either.

For completeness (even though I doesn't seem to make a difference in my trials), I have set

$ echo $LESS
-F -R

[KapJI]

Delta pager is configured in [delta] section in .gitconfig:

[delta]
pager = "ov -F"

Also paging may be not used because of -F flag. From man less:

-F or --quit-if-one-screen
              Causes less to automatically exit if the entire file can be displayed on the first screen.

[Uroc327]

I don't see how this applies. As far as I understand, I don't want to configure delta (being the tool that generates the diffs per file). This part works fine, I believe. I obtain unpaged, nicely colored outputs for each individual file from chezmoi diff. I would like to see this whole, complete output containing all files to be paged. Essentially, I want chezmoi diff | less. As this is not required with the default diff/pager config, I assume there is either a bug in my chezmoi.toml or in chezmoi.

[twpayne]

See https://www.chezmoi.io/user-guide/tools/diff/#use-delta-as-the-diff-tool.

[Uroc327]

The

[diff]
    command = "delta"
    pager = "delta"

part you mean? I tried that as well and observed the same behavior.

My .gitconfig does not contain a [delta] section, if that helps.

[KapJI]

I'm not sure why it needs to be set as both diff.command and diff.pager.

In my case I have delta set as diff.pager only and it works as @Uroc327 seeks. For Git delta is configured the similar way, as pager, not as diff command. It takes regular diff and reformats it. If configured, it uses pager itself.

[KapJI]

Created #4207 to reflect this in docs.

[Uroc327]

Thanks!
Setting

[diff]
	pager = "delta --keep-plus-minus-markers"

in chezmoi.toml works.

[twpayne]

Please read #4207 (comment).