How do I indent tabs in Emacs?

Emacs normally uses both tabs and spaces to indent lines. If you prefer, all indentation can be made from spaces only. To request this, set indent-tabs-mode to nil . This is a per-buffer variable, so altering the variable affects only the current buffer, but there is a default value which you can change as well.

How do you set a tab to 4 spaces in Emacs?

Just change the value of indent-line-function to the insert-tab function and configure tab insertion as 4 spaces. Update: Since Emacs 24.4: tab-stop-list is now implicitly extended to infinity. Its default value is changed to nil which means a tab stop every tab-width columns.

How do I indent a region in Emacs?

Steps to do indentation interactively.

Select the region to be indented.
C-x TAB .
Use arrows (← and →) to indent interactively.
Press Esc three times when you are done with the required indentation.

How do I delete a tab in Emacs?

If you want to remove tabs in an existing file, mark the whole buffer using C-x h and use M-x untabify . ( M-x tabify does the opposite …) Discussion on whether this is a good idea: TabsAreEvil (or not). If you wish to change the amount of spaces that the Tab key inserts, check out the TabStopList page.

How do I change the tab space in Emacs?

Just change the value of indent-line-function to the insert-tab function and configure tab insertion as 4 spaces.

How do I set the tab width in Emacs?

With tab-width equal to the default value of 8, Emacs would insert 1 tab plus 2 spaces. Use t rather than nil to tell Emacs to use tab characters where appropriate. If you only want this in a particular mode, add (setq indent-tabs-mode nil) to that mode’s hook.

How do I align codes in Emacs?

2 Answers

Select the region.
Type M-x align-regexp RET.
Type = and hit enter.

How do I move text in Emacs?

3 Answers. You could select the region then C-u C-x will shift 4 spaces. You can type a number after C-u to change 4 to anything else. One more tip: the number after C-u may be negative, in this case region will be shifted to the left instead of to the right.

How do I change a tab to space in Emacs?

To replace tabs with the appropriate number of spaces, use M-x untabify . To do the reverse and convert multiple spaces to tabs, you can use M-x tabify . Both commands work on a region. To run on the whole buffer use a prefix argument (i.e. C-u M-x untabify ).

What is the indent mode in Emacs 16.6?

16.6 Indent Tabs Mode. By default, Emacs inserts tabs in place of multiple spaces when it formats a region. (For example, you might indent many lines of text all at once with the indent-region command.) Tabs look fine on a terminal or with ordinary printing, but they produce badly indented output when you use TeX or Texinfo since TeX ignores tabs.

Is there such thing as indentation in Lisp?

The concept of indentation really doesn’t exist in Lisp. It’s all about alignment, and tabs will screw up the precise alignment that Lisp requires. Remember not to define the variable custom-tab-width twice! It should be defined above your enable/disable tabs functions.

When to use tabs instead of spaces in Emacs?

By default, Emacs inserts tabs in place of multiple spaces when it formats a region. (For example, you might indent many lines of text all at once with the indent-region command.) Tabs look fine on a terminal or with ordinary printing, but they produce badly indented output when you use TeX or Texinfo since TeX ignores tabs.

Which is the best lisp mode for Emacs?

Emacs Lisp Mode is one of the best ProgrammingModes that comes with Emacs for working with EmacsLisp. Emacs Lisp Mode is enabled for any files ending in .el or when editing the Emacs InitFile. Emacs Lisp Mode is used for EvaluatingExpressions.