As usual, gcc finds some real problems but also reports a ton of noise. Fix the problems and quiet the noise.

Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>

Also note that the file must be valid shell and mk input. For #321.

Change-Id: I9b8a4430e7d26008ba9508095f8eb4b124a93b9b

Change-Id: I45bd62a590373669e90183cc2b2ee56570c007f5

In general, no space after `if` etc, and no braces for a single statement inside of a loop or conditional. Signed-off-by: Dan Cross <cross@gajendra.net>

A loop is added for each structure field instead of accessing the other fields through the first one in one loop. Updates #313 Change-Id: I0e27e15feacb77391bc1decee7cf720d64d14586

POSIX does not support grouping in case item patterns. Installing with a strict POSIX shell fails with: /usr/local/plan9/bin/9c: line 82: syntax error near unexpected token `(' /usr/local/plan9/bin/9c: line 82: `*(DragonFly|BSD)*gcc*) usegcc ;;' This change expands the patterns to work around the limitation. See https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_10 (and search for case_clause)

GCC pointed this out with some "warning: ‘strncpy’ specified bound NUM equals destination size [-Wstringop-truncation]" warnings. Change-Id: Id8408b165f6e4ae82c96a77599d89f658d979b32

These make no sense and are not really needed at all. Add a best-effort attempt to get at the gcc/clang macro in lib9.h, but if it fails, no big deal. Fixes #324.

Change-Id: Ia5c888db1f0ded2aa92238d994239e46bf52667a

Change-Id: I08cb7227c071c7fc2e30f43e07bcf599fc1d174a

Add a menu item which functions similar to acme's `Look` command. This is copied from 9front. See: https://code.9front.org/hg/plan9front/rev/1f1596dbca51 https://code.9front.org/hg/plan9front/rev/d2de1d2f7b48