[Libvir] proposal: remove contradictory indentation directive

Dave Leskovec <dlesko(a)linux.vnet.ibm.com&gt; wrote: ... Please don't add the "tab-width: 4" specifier. Specifying a tab-width at all in a new file with "indent-tabs-mode: nil" is a contradiction. The latter says there should be no TABs, yet the former says "when there are, give them width 4." Coding style guidelines are universal in their recommendations to stick with 8-byte TAB stops, independent of whether you actually use TAB or spaces. Just yesterday I experienced first hand how adding code with existing 8-byte tab stops to a file with settings like the above mangles the indentation of the new code. FYI, a better approach would be to ensure that TAB is never used for indentation in a file with "indent-tabs-mode: nil". Both directives are in over 70 files, and I propose to straighten things out. There are many instances of invalid and misleading indentation, in part because of this sort of mix-up. To give an idea of the scope, while 77 files have those settings, removing 'tab-width: 4' would only affect those that use TABs for indentation in spite of "indent-tabs-mode: nil" (perhaps added via copy/paste, or added with a non-emacs editor). Many distro-provided versions of Vim do not honor :se-style settings, due to security concerns. Here are counts of lines with TAB indentation in those 77 files. Each TAB would have to be changed to 4 or 8 spaces, depending on context. That'd be the minimal change. An alternative is simply to filter each of these files through indent with appropriate options. $ git grep -l tab-width:|xargs grep -c '^ '|grep -v :0 proxy/libvirt_proxy.c:316 python/libvir.c:17 src/buf.c:27 src/conf.c:161 src/conf.h:7 src/driver.h:130 src/internal.h:9 src/libvirt.c:81 src/lxc_conf.c:17 src/openvz_driver.h:6 src/proxy_internal.c:122 src/proxy_internal.h:13 src/qemu_conf.c:1 src/qemu_driver.c:5 src/qparams.h:1 src/remote_internal.c:4 src/stats_linux.h:3 src/virsh.c:33 src/virterror.c:166 src/xen_internal.c:105 src/xen_unified.c:25 src/xen_unified.h:37 src/xend_internal.c:43 src/xm_internal.c:25 src/xml.c:6 src/xs_internal.c:45 tests/nodeinfotest.c:1 tests/sexpr2xmltest.c:83