The quickest way to delete a function argument in Vim

If I have the following code:

foo->call(bar, baz->widget);

With cursor on "b" in "baz" or on "w" in "widget", how would I quickly delete the argument at the cursor开发者_运维知识库?

foo->call(bar);

It can be any argument (first, last, or in the middle).

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With my omap-param plugin, just type di, or da,.

It won't be bothered by other brackets. For instance, in f(a+g(42, "string")), foobar), from "a" to "g", da, will just leave foobar in f call.

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For the first argument, this key-combination goes to opening parenthesis, and deletes everything up to the next comma, including the space after it:

T(df,x

For a middle argument, this key-combination goes to the previous comma, and deletes it and everything until the next comma:

F,dt,

For the last argument, this key-combination goes to the previous comma, and deletes it and everything until the closing parenthesis:

F,dt)

-- or --

You can write your own macro to do this sort of thing. A similar example is here.

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targets.vim is a further plugin that provides aa and ia (which fixes also missing default behaviour of builtin text-objects, compare discussion on TextObjectify)

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vim-argumentative is another plugin option that provides a, and i, text objects and more.

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?,enter to move to the previous ','

d/,enter to delete to the next ','

no plugins required

you may need to prepend the search terms with a number in the case of template params:

void foo( sometype a, some_template_type< sometype, sometype > b, sometype c )

or you could press '.' however many comma seperations you want rid of.

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It's difficult to make something that works consistently for the first or last cases.

Something like this will work reasonably well:

/(\)|,)
dT,

This will find the next , or ) character, then delete back to the character after the previous ,. It won't work for the first parameter and won't work as intended if your parameter includes a ) or ,, for example if there is a function call in there.

You could put this into a macro:

qd
/(\)|,)
dT,
q

Then to reuse, go to the parameter you would like to delete and run the macro:

@d