c-indent-line-or-regionc-indent-line-or-region is an interactive compiled Lisp function in `
cc-cmds.el'. (c-indent-line-or-region &optional ARG REGION) Indent active region, current line, or block starting on this line. In Transient Mark mode, when the region is active, reindent the region. Otherwise, with a prefix argument, rigidly reindent the expression starting on the current line. Otherwise reindent just the current line.