🚀 ignore big file diff

[swuecho]

really like delta to show the diff but not usable when file too big.

when file is too big, delta will be no response. wonder if there is a way to stop diff specific file.

also, is there a way to tell git to stop using delta by some command line option while keep the git config unchanged? (I want to use delta by default, but when it does not work, I want to use the default git diff).

Thanks.

[dandavison]

Hi @swuecho, thank you!

Can you tell me, which of these is closest to your problem?

• problem with individual long lines (like 🐛 High memory usage when fed diff of minimized files #154)
• problem with many lines displayed (like 🚀add an option to limit number of lines shown for added/removed in git {log,diff} etc #156)

is there a way to tell git to stop using delta by some command line option while keep the git config unchanged?

Yes, there is. You can use the git config --global command. For example:

# Disable delta
git config --global --unset core.pager

# Enable delta
git config --global core.pager delta

You can use that to set any git config option (git options and delta options): there are a few examples in the delta README.

[Kr1ss-XD]

FWIW, git config --global does modify the (global) git configuration. While it is easy to revert the effect (e.g. set up aliases for the two mentioned commands - delta-on and delta-off for example), you can also switch off paging for a single git call via command line option.

Just call git as git -P or git --no-pager. this won't alter your configuration.

[dandavison]

Hi @Kr1ss-XD, yes that's true that it modifies our gitconfig files on disk. However, git --no-pager doesn't use a pager at all, so it is no good for large diffs or git log -p. So perhaps an even better alternative is

git -c 'core.pager=less -R' {show/diff/log -p etc}

But... git -c ... cannot be used to set delta options. For example, git -c 'delta.side-by-side=true' does not work at all, because delta only sees git config on disk.

So I think for that reason I am currently embracing the idea of using my gitconfig as something that can be transiently mutated (I keep it in git, of course, so I can see the changes), and using aliases based on git config --global to alter git/delta options transiently.

[Kr1ss-XD]

Agreed, those are good points.

[swuecho]

Hi @swuecho, thank you!

Can you tell me, which of these is closest to your problem?

• problem with individual long lines (like 🐛 High memory usage when fed diff of minimized files #154)
• problem with many lines displayed (like 🚀add an option to limit number of lines shown for added/removed in git {log,diff} etc #156)

is there a way to tell git to stop using delta by some command line option while keep the git config unchanged?

Yes, there is. You can use the git config --global command. For example:

# Disable delta
git config --global --unset core.pager

# Enable delta
git config --global core.pager delta

You can use that to set any git config option (git options and delta options): there are a few examples in the delta README.

set alias to those as suggested by @Kr1ss-XD works great.

it is a long line of json, which is the result of snapshot test. -M, --max-columns <NUM> seems a reasonable fix.
not sure if it is possible to set a time limit in rust for a function run. such as run 1s if no result, then give up.

[dandavison]

Thanks @swuecho I'm going to make fixing this/#154 my next task. That's an interesting idea about a timeout. Delta only has a single thread at the moment, but it could be fun to learn how to do the timeout in Rust. However, hopefully we can avoid any such hangs by truncating long-lines or emitting them raw.

[dandavison]

Fixed in master branch (not released yet)