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4.2.2 Section Visibility

Magit provides many commands for changing the visibility of sections, but all you need to get started are the next two.

TAB     (magit-section-toggle)

Toggle the visibility of the body of the current section.

C-<tab>     (magit-section-cycle)

Cycle the visibility of current section and its children.

M-<tab>     (magit-section-cycle-diffs)

Cycle the visibility of diff-related sections in the current buffer.

S-<tab>     (magit-section-cycle-global)

Cycle the visibility of all sections in the current buffer.

1     (magit-section-show-level-1)
2     (magit-section-show-level-2)
3     (magit-section-show-level-3)
4     (magit-section-show-level-4)

Show sections surrounding the current section up to level N.

M-1     (magit-section-show-level-1-all)
M-2     (magit-section-show-level-2-all)
M-3     (magit-section-show-level-3-all)
M-4     (magit-section-show-level-4-all)

Show all sections up to level N.

Some functions, which are used to implement the above commands, are also exposed as commands themselves. By default no keys are bound to these commands, as they are generally perceived to be much less useful. But your mileage may vary.

Command: magit-section-show

Show the body of the current section.

Command: magit-section-hide

Hide the body of the current section.

Command: magit-section-show-headings

Recursively show headings of children of the current section. Only show the headings. Previously shown text-only bodies are hidden.

Command: magit-section-show-children

Recursively show the bodies of children of the current section. With a prefix argument show children down to the level of the current section, and hide deeper children.

Command: magit-section-hide-children

Recursively hide the bodies of children of the current section.

Command: magit-section-toggle-children

Toggle visibility of bodies of children of the current section.

When a buffer is first created then some sections are shown expanded while others are not. This is hard coded. When a buffer is refreshed then the previous visibility is preserved. The initial visibility of certain sections can also be overwritten using the hook magit-section-set-visibility-hook.

User Option: magit-section-initial-visibility-alist

This options can be used to override the initial visibility of sections. In the future it will also be used to define the defaults, but currently a section’s default is still hardcoded.

The value is an alist. Each element maps a section type or lineage to the initial visibility state for such sections. The state has to be one of show or hide, or a function that returns one of these symbols. A function is called with the section as the only argument.

Use the command magit-describe-section to determine a section’s lineage or type. The vector in the output is the section lineage and the type is the first element of that vector. Wildcards can be used, see magit-section-match.

User Option: magit-section-cache-visibility

This option controls for which sections the previous visibility state should be restored if a section disappears and later appears again. The value is a boolean or a list of section types. If t, then the visibility of all sections is cached. Otherwise this is only done for sections whose type matches one of the listed types.

This requires that the function magit-section-cached-visibility is a member of magit-section-set-visibility-hook.

Variable: magit-section-set-visibility-hook

This hook is run when first creating a buffer and also when refreshing an existing buffer, and is used to determine the visibility of the section currently being inserted.

Each function is called with one argument, the section being inserted. It should return hide or show, or to leave the visibility undefined nil. If no function decides on the visibility and the buffer is being refreshed, then the visibility is preserved; or if the buffer is being created, then the hard coded default is used.

Usually this should only be used to set the initial visibility but not during refreshes. If magit-insert-section--oldroot is non-nil, then the buffer is being refreshed and these functions should immediately return nil.

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