delimit-columns-format

delimit-columns-format is a variable defined in `delim-col.el'.
Its value is

t

Documentation:
Specify how to format columns.

For examples below, consider:

+ columns `ccc' and `dddd',
+ the maximum column length for each column is 6,
+ and the following settings:
(setq delimit-columns-before "<")
(setq delimit-columns-after ">")
(setq delimit-columns-separator ":")

Valid values are:

nil no formatting. That is, `delimit-columns-after' is followed by
`delimit-columns-separator'.
For example, the result is: "::"

t align columns. That is, `delimit-columns-after' is followed by
`delimit-columns-separator' and then followed by spaces.
For example, the result is: ": : "

'separator align separators. That is, `delimit-columns-after' is followed
by spaces and then followed by `delimit-columns-separator'.
For example, the result is: " : :"

'padding format column by filling with spaces before
`delimit-columns-after'. That is, spaces are followed by
`delimit-columns-after' and then followed by
`delimit-columns-separator'.
For example, the result is: "::"

Any other value is treated as t.

You can customize this variable.