CVS log for src/tests/usr.bin/indent/Attic/comment-line-end.0.stdout

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tests/indent: consolidate tests for comments

These tests have been the motivation for t_options.sh, which allows to
run indent with various command line options on the same input, without
having to create 3 files per test case.

A test file actually contains several tests, all separated by '#indent'
directives. Isolating each of these tests is simpler than having to pick
up the corresponding sections from 3 separate files. Running indent on
each small test case isolates the test cases from each other, preventing
them to influence later test cases. Exactly this had happened when
support for C99 comments was added in March 2021, which later turned
out to be done wrong.

indent: fix formatting of C99 comments

The first attempt at formatting C99 comments was conceptually wrong. It
accessed the next token in dump_line, even though that function should
only ever look at the buffers for the label, the code and the current
comment. (Understanding that part of the code was difficult at that time
due to the sheer number of global variables.) The complicated and
ever-growing condition for whether to output the token was a hack and in
retrospect doesn't make sense at all, that's why it only came close to
the intended effect.

Some unintended side effects were that the C99 comments had an
additional space in front of them, and that in some cases an empty line
followed the comment, and that the comments were not aligned.

Previously, the newline that terminates the C99 comment was included in
the comment. Separating the newline from the comment fixed all these
unintended side effects. The only downside is that the multi-line
statement is not indented, but that should be easy to fix.

tests/indent: add more tests with ')(', found bug in '//'

indent: fix token duplication after C99 comment

The code that keeps blank lines after C99 comments still looks wrong,
but at least it's better than before.

tests/indent: demonstrate token repetition after line-end comment

tests/indent: demonstrate stray empty line at end-of-file

indent: fix handling of '//' end-of-line comments

tests/indent: allow for comments in either the input or output files

tests/indent: extend test for '//' comments with more examples

indent: add test demonstrating that indent cannot handle C99

indent cannot handle line-end comments.

The indent test suite requires each test file to have both a NetBSD and
a FreeBSD RCS ID.  If the FreeBSD RCS ID is missing, the test will
silently pass since in that case, an empty file is compared with an
empty file.  See the /start/,/end/ operator in t_indent.sh.