[PATCH 2 of 3] status: add a flag to terse the output (issue4119)

[Pulkit Goyal]

# HG changeset patch
# User Pulkit Goyal <7895pulkit at gmail.com>
# Date 1497469028 -19800
#      Thu Jun 15 01:07:08 2017 +0530
# Node ID 312ec8385177d5780851ae1e682ea992a99a17ba
# Parent  622220c3eb0a6ae2f0e7dfc94ac103ad4bfc53aa
status: add a flag to terse the output (issue4119)

This adds an experimental flag -t/--terse which will terse the output. The terse flag
respects other flags which filters the output. The flag takes a string as value
whose value can be a subsequence of "marduic" (the order does not matter here.)

If "i" is not present in the terse flag value and not also passed as -i, ignored
files will not be considered while tersing. If one wants to consider ignored
files, he can add "i" to his terse flag' value or pass the -i flag.

The flag is experimental because there might be some cases which might not yet
covered resulting in bug.

Also we can set the terse on by default for unknowns by passing 'u' if
opts.get('terse') is None.

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -4708,6 +4708,7 @@
     ('u', 'unknown', None, _('show only unknown (not tracked) files')),
     ('i', 'ignored', None, _('show only ignored files')),
     ('n', 'no-status', None, _('hide status prefix')),
+    ('t', 'terse', '', _('show the terse output (EXPERIMENTAL)')),
     ('C', 'copies', None, _('show source of copied files')),
     ('0', 'print0', None, _('end filenames with NUL, for use with xargs')),
     ('', 'rev', [], _('show difference from revision'), _('REV')),
@@ -4779,6 +4780,7 @@
     opts = pycompat.byteskwargs(opts)
     revs = opts.get('rev')
     change = opts.get('change')
+    terse = opts.get('terse')
 
     if revs and change:
         msg = _('cannot specify --rev and --change at the same time')
@@ -4803,16 +4805,27 @@
     show = [k for k in states if opts.get(k)]
     if opts.get('all'):
         show += ui.quiet and (states[:4] + ['clean']) or states
+        if ui.quiet and terse:
+            for st in ('ignored', 'unknown'):
+                if st[0:1] in terse:
+                    show.append(st)
+
     if not show:
         if ui.quiet:
             show = states[:4]
         else:
             show = states[:5]
+        if terse:
+            for st in ('ignored', 'unknown', 'clean'):
+                if st[0:1] in terse:
+                    show.append(st)
 
     m = scmutil.match(repo[node2], pats, opts)
     stat = repo.status(node1, node2, m,
                        'ignored' in show, 'clean' in show, 'unknown' in show,
                        opts.get('subrepos'))
+    if terse:
+        stat = cmdutil.tersestatus(repo, stat, terse, opts.get('ignore'))
     changestates = zip(states, pycompat.iterbytestr('MAR!?IC'), stat)
 
     if (opts.get('all') or opts.get('copies')
diff --git a/tests/test-completion.t b/tests/test-completion.t
--- a/tests/test-completion.t
+++ b/tests/test-completion.t
@@ -230,7 +230,7 @@
   push: force, rev, bookmark, branch, new-branch, ssh, remotecmd, insecure
   remove: after, force, subrepos, include, exclude
   serve: accesslog, daemon, daemon-postexec, errorlog, port, address, prefix, name, web-conf, webdir-conf, pid-file, stdio, cmdserver, templates, style, ipv6, certificate, subrepos
-  status: all, modified, added, removed, deleted, clean, unknown, ignored, no-status, copies, print0, rev, change, include, exclude, subrepos, template
+  status: all, modified, added, removed, deleted, clean, unknown, ignored, no-status, terse, copies, print0, rev, change, include, exclude, subrepos, template
   summary: remote
   update: clean, check, merge, date, rev, tool
   addremove: similarity, subrepos, include, exclude, dry-run