Make hg glog abort if unused arguments are given.

hgext/graphlog.py

@@ -1,265 +1,265 b''
 # ASCII graph log extension for Mercurial
 #
 # Copyright 2007 Joel Rosdahl <[e-mail]>
 #
 # This software may be used and distributed according to the terms of
 # the GNU General Public License, incorporated herein by reference.
 
 import sys
 from mercurial.cmdutil import revrange, show_changeset
 from mercurial.i18n import _
 from mercurial.node import nullid, nullrev
 from mercurial.util import Abort
 
 def revision_grapher(repo, start_rev, stop_rev):
     """incremental revision grapher
 
     This generator function walks through the revision history from
     revision start_rev to revision stop_rev (which must be less than
     or equal to start_rev) and for each revision emits tuples with the
     following elements:
 
       - Current revision.
       - Current node.
       - Column of the current node in the set of ongoing edges.
       - Edges; a list of (col, next_col) indicating the edges between
         the current node and its parents.
       - Number of columns (ongoing edges) in the current revision.
       - The difference between the number of columns (ongoing edges)
         in the next revision and the number of columns (ongoing edges)
         in the current revision. That is: -1 means one column removed;
         0 means no columns added or removed; 1 means one column added.
     """
 
     assert start_rev >= stop_rev
     curr_rev = start_rev
     revs = []
     while curr_rev >= stop_rev:
         node = repo.changelog.node(curr_rev)
 
         # Compute revs and next_revs.
         if curr_rev not in revs:
             # New head.
             revs.append(curr_rev)
         rev_index = revs.index(curr_rev)
         next_revs = revs[:]
 
         # Add parents to next_revs.
         parents = get_rev_parents(repo, curr_rev)
         parents_to_add = []
         for parent in parents:
             if parent not in next_revs:
                 parents_to_add.append(parent)
         parents_to_add.sort()
         next_revs[rev_index:rev_index + 1] = parents_to_add
 
         edges = []
         for parent in parents:
             edges.append((rev_index, next_revs.index(parent)))
 
         n_columns_diff = len(next_revs) - len(revs)
         yield (curr_rev, node, rev_index, edges, len(revs), n_columns_diff)
 
         revs = next_revs
         curr_rev -= 1
 
 def get_rev_parents(repo, rev):
     return [x for x in repo.changelog.parentrevs(rev) if x != nullrev]
 
 def fix_long_right_edges(edges):
     for (i, (start, end)) in enumerate(edges):
         if end > start:
             edges[i] = (start, end + 1)
 
 def draw_edges(edges, nodeline, interline):
     for (start, end) in edges:
         if start == end + 1:
             interline[2 * end + 1] = "/"
         elif start == end - 1:
             interline[2 * start + 1] = "\\"
         elif start == end:
             interline[2 * start] = "|"
         else:
             nodeline[2 * end] = "+"
             if start > end:
                 (start, end) = (end,start)
             for i in range(2 * start + 1, 2 * end):
                 if nodeline[i] != "+":
                     nodeline[i] = "-"
 
 def format_line(line, level, logstr):
     text = "%-*s %s" % (2 * level, "".join(line), logstr)
     return "%s\n" % text.rstrip()
 
 def get_nodeline_edges_tail(
         node_index, p_node_index, n_columns, n_columns_diff, p_diff, fix_tail):
     if fix_tail and n_columns_diff == p_diff and n_columns_diff != 0:
         # Still going in the same non-vertical direction.
         if n_columns_diff == -1:
             start = max(node_index + 1, p_node_index)
             tail = ["|", " "] * (start - node_index - 1)
             tail.extend(["/", " "] * (n_columns - start))
             return tail
         else:
             return ["\\", " "] * (n_columns - node_index - 1)
     else:
         return ["|", " "] * (n_columns - node_index - 1)
 
 def get_padding_line(ni, n_columns, edges):
     line = []
     line.extend(["|", " "] * ni)
     if (ni, ni - 1) in edges or (ni, ni) in edges:
         # (ni, ni - 1)      (ni, ni)
         # | | | |           | | | |
         # +---o |           | o---+
         # | | c |           | c | |
         # | |/ /            | |/ /
         # | | |             | | |
         c = "|"
     else:
         c = " "
     line.extend([c, " "])
     line.extend(["|", " "] * (n_columns - ni - 1))
     return line
 
 def get_limit(limit_opt):
     if limit_opt:
         try:
             limit = int(limit_opt)
         except ValueError:
             raise Abort(_("limit must be a positive integer"))
         if limit <= 0:
             raise Abort(_("limit must be positive"))
     else:
         limit = sys.maxint
     return limit
 
 def get_revs(repo, rev_opt):
     if rev_opt:
         revs = revrange(repo, rev_opt)
         return (max(revs), min(revs))
     else:
         return (repo.changelog.count() - 1, 0)
 
-def graphlog(ui, repo, *args, **opts):
+def graphlog(ui, repo, **opts):
     """show revision history alongside an ASCII revision graph
 
     Print a revision history alongside a revision graph drawn with
     ASCII characters.
 
     Nodes printed as an @ character are parents of the working
     directory.
     """
 
     limit = get_limit(opts["limit"])
     (start_rev, stop_rev) = get_revs(repo, opts["rev"])
     stop_rev = max(stop_rev, start_rev - limit + 1)
     if start_rev == nullrev:
         return
     cs_printer = show_changeset(ui, repo, opts)
     grapher = revision_grapher(repo, start_rev, stop_rev)
     repo_parents = repo.dirstate.parents()
     prev_n_columns_diff = 0
     prev_node_index = 0
 
     for (rev, node, node_index, edges, n_columns, n_columns_diff) in grapher:
         # log_strings is the list of all log strings to draw alongside
         # the graph.
         ui.pushbuffer()
         cs_printer.show(rev, node)
         log_strings = ui.popbuffer().split("\n")[:-1]
 
         if n_columns_diff == -1:
             # Transform
             #
             #     | | |        | | |
             #     o | |  into  o---+
             #     |X /         |/ /
             #     | |          | |
             fix_long_right_edges(edges)
 
         # add_padding_line says whether to rewrite
         #
         #     | | | |        | | | |
         #     | o---+  into  | o---+
         #     |  / /         |   | |  # <--- padding line
         #     o | |          |  / /
         #                    o | |
         add_padding_line = (len(log_strings) > 2 and
                             n_columns_diff == -1 and
                             [x for (x, y) in edges if x + 1 < y])
 
         # fix_nodeline_tail says whether to rewrite
         #
         #     | | o | |        | | o | |
         #     | | |/ /         | | |/ /
         #     | o | |    into  | o / /   # <--- fixed nodeline tail
         #     | |/ /           | |/ /
         #     o | |            o | |
         fix_nodeline_tail = len(log_strings) <= 2 and not add_padding_line
 
         # nodeline is the line containing the node character (@ or o).
         nodeline = ["|", " "] * node_index
         if node in repo_parents:
             node_ch = "@"
         else:
             node_ch = "o"
         nodeline.extend([node_ch, " "])
 
         nodeline.extend(
             get_nodeline_edges_tail(
                 node_index, prev_node_index, n_columns, n_columns_diff,
                 prev_n_columns_diff, fix_nodeline_tail))
 
         # shift_interline is the line containing the non-vertical
         # edges between this entry and the next.
         shift_interline = ["|", " "] * node_index
         if n_columns_diff == -1:
             n_spaces = 1
             edge_ch = "/"
         elif n_columns_diff == 0:
             n_spaces = 2
             edge_ch = "|"
         else:
             n_spaces = 3
             edge_ch = "\\"
         shift_interline.extend(n_spaces * [" "])
         shift_interline.extend([edge_ch, " "] * (n_columns - node_index - 1))
 
         # Draw edges from the current node to its parents.
         draw_edges(edges, nodeline, shift_interline)
 
         # lines is the list of all graph lines to print.
         lines = [nodeline]
         if add_padding_line:
             lines.append(get_padding_line(node_index, n_columns, edges))
         lines.append(shift_interline)
 
         # Make sure that there are as many graph lines as there are
         # log strings.
         while len(log_strings) < len(lines):
             log_strings.append("")
         if len(lines) < len(log_strings):
             extra_interline = ["|", " "] * (n_columns + n_columns_diff)
             while len(lines) < len(log_strings):
                 lines.append(extra_interline)
 
         # Print lines.
         indentation_level = max(n_columns, n_columns + n_columns_diff)
         for (line, logstr) in zip(lines, log_strings):
             ui.write(format_line(line, indentation_level, logstr))
 
         # ...and start over.
         prev_node_index = node_index
         prev_n_columns_diff = n_columns_diff
 
 cmdtable = {
     "glog":
         (graphlog,
          [('l', 'limit', '', _('limit number of changes displayed')),
           ('p', 'patch', False, _('show patch')),
           ('r', 'rev', [], _('show the specified revision or range')),
           ('', 'style', '', _('display using template map file')),
           ('', 'template', '', _('display with template'))],
          _('hg glog [OPTION]...')),
 }

tests/test-glog

@@ -1,140 +1,143 b''
 #!/bin/sh
 
 # @  (34) head
 # |
 # | o  (33) head
 # | |
 # o |    (32) expand
 # |\ \
 # | o \    (31) expand
 # | |\ \
 # | | o \    (30) expand
 # | | |\ \
 # | | | o |  (29) regular commit
 # | | | | |
 # | | o | |    (28) merge zero known
 # | | |\ \ \
 # o | | | | |  (27) collapse
 # |/ / / / /
 # | | o---+  (26) merge one known; far right
 # | | | | |
 # +---o | |  (25) merge one known; far left
 # | | | | |
 # | | o | |  (24) merge one known; immediate right
 # | | |\| |
 # | | o | |  (23) merge one known; immediate left
 # | |/| | |
 # +---o---+  (22) merge two known; one far left, one far right
 # | |  / /
 # o | | |    (21) expand
 # |\ \ \ \
 # | o---+-+  (20) merge two known; two far right
 # |  / / /
 # o | | |    (19) expand
 # |\ \ \ \
 # +---+---o  (18) merge two known; two far left
 # | | | |
 # | o | |    (17) expand
 # | |\ \ \
 # | | o---+  (16) merge two known; one immediate right, one near right
 # | | |/ /
 # o | | |    (15) expand
 # |\ \ \ \
 # | o-----+  (14) merge two known; one immediate right, one far right
 # | |/ / /
 # o | | |    (13) expand
 # |\ \ \ \
 # +---o | |  (12) merge two known; one immediate right, one far left
 # | | |/ /
 # | o | |    (11) expand
 # | |\ \ \
 # | | o---+  (10) merge two known; one immediate left, one near right
 # | |/ / /
 # o | | |    (9) expand
 # |\ \ \ \
 # | o-----+  (8) merge two known; one immediate left, one far right
 # |/ / / /
 # o | | |    (7) expand
 # |\ \ \ \
 # +---o | |  (6) merge two known; one immediate left, one far left
 # | |/ / /
 # | o | |    (5) expand
 # | |\ \ \
 # | | o | |  (4) merge two known; one immediate left, one immediate right
 # | |/|/ /
 # | o / /  (3) collapse
 # |/ / /
 # o / /  (2) collapse
 # |/ /
 # o /  (1) collapse
 # |/
 # o  (0) root
 
 set -e
 
 commit()
 {
     rev=$1
     msg=$2
     shift 2
     if [ "$#" -gt 0 ]; then
         hg debugsetparents "$@"
     fi
     echo $rev > $rev
     hg add $rev
     hg ci -d "$rev 0" -m "($rev) $msg"
 }
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
 
 echo % init
 hg init repo
 
 cd repo
 
 echo % empty repo
 hg glog
 
 echo % building tree
 commit 0 "root"
 commit 1 "collapse" 0
 commit 2 "collapse" 1
 commit 3 "collapse" 2
 commit 4 "merge two known; one immediate left, one immediate right" 1 3
 commit 5 "expand" 3 4
 commit 6 "merge two known; one immediate left, one far left" 2 5
 commit 7 "expand" 2 5
 commit 8 "merge two known; one immediate left, one far right" 0 7
 commit 9 "expand" 7 8
 commit 10 "merge two known; one immediate left, one near right" 0 6
 commit 11 "expand" 6 10
 commit 12 "merge two known; one immediate right, one far left" 1 9
 commit 13 "expand" 9 11
 commit 14 "merge two known; one immediate right, one far right" 0 12
 commit 15 "expand" 13 14
 commit 16 "merge two known; one immediate right, one near right" 0 1
 commit 17 "expand" 12 16
 commit 18 "merge two known; two far left" 1 15
 commit 19 "expand" 15 17
 commit 20 "merge two known; two far right" 0 18
 commit 21 "expand" 19 20
 commit 22 "merge two known; one far left, one far right" 18 21
 commit 23 "merge one known; immediate left" 1 22
 commit 24 "merge one known; immediate right" 0 23
 commit 25 "merge one known; far left" 21 24
 commit 26 "merge one known; far right" 18 25
 commit 27 "collapse" 21
 commit 28 "merge zero known" 1 26
 commit 29 "regular commit" 0
 commit 30 "expand" 28 29
 commit 31 "expand" 21 30
 commit 32 "expand" 27 31
 commit 33 "head" 18
 commit 34 "head" 32
 
 echo % glog -q
 hg glog -q
 
 echo % glog
 hg glog
+
+echo % unused arguments
+hg glog -q foo || echo failed

tests/test-glog.out

@@ -1,309 +1,315 b''
 % init
 % empty repo
 % building tree
 % glog -q
 @  34:0eed7cd895e0
 |
 | o  33:2e9d1b521374
 | |
 o |    32:77f7d8438a3c
 |\ \
 | o \    31:82ee55204a79
 | |\ \
 | | o \    30:777dfc428649
 | | |\ \
 | | | o |  29:f8e7fee63353
 | | | | |
 | | o | |    28:4b6e9bd48cf9
 | | |\ \ \
 o | | | | |  27:e9e08174cd30
 |/ / / / /
 | | o---+  26:720dc079a855
 | | | | |
 +---o | |  25:9d4ed048d013
 | | | | |
 | | o | |  24:4a68967db00d
 | | |\| |
 | | o | |  23:bc31393cabdf
 | |/| | |
 +---o---+  22:a37f2ea6ebc6
 | |  / /
 o | | |    21:e758e8f4ace9
 |\ \ \ \
 | o---+-+  20:aeccadad74b4
 |  / / /
 o | | |    19:138069b5dad7
 |\ \ \ \
 +---+---o  18:5a8c9a29ef81
 | | | |
 | o | |    17:43e52b935494
 | |\ \ \
 | | o---+  16:449a2f9562a4
 | | |/ /
 o | | |    15:c0b4283d4c1d
 |\ \ \ \
 | o-----+  14:9d533950abf0
 | |/ / /
 o | | |    13:c39d0a2b8165
 |\ \ \ \
 +---o | |  12:74dc7aea4494
 | | |/ /
 | o | |    11:c3c395dd8b98
 | |\ \ \
 | | o---+  10:8094c50149ef
 | |/ / /
 o | | |    9:79ab1812f961
 |\ \ \ \
 | o-----+  8:d7aa38594334
 |/ / / /
 o | | |    7:699392d1259e
 |\ \ \ \
 +---o | |  6:0ca7c061cf45
 | |/ / /
 | o | |    5:3589c3c477ab
 | |\ \ \
 | | o | |  4:e2cad8233c77
 | |/|/ /
 | o / /  3:02173ffbf857
 |/ / /
 o / /  2:e8ea2256f9ec
 |/ /
 o /  1:3cae7826a707
 |/
 o  0:7aa22e58e8c1
 
 % glog
 @  changeset:   34:0eed7cd895e0
 |  tag:         tip
 |  parent:      32:77f7d8438a3c
 |  user:        test
 |  date:        Thu Jan 01 00:00:34 1970 +0000
 |  summary:     (34) head
 |
 | o  changeset:   33:2e9d1b521374
 | |  parent:      18:5a8c9a29ef81
 | |  user:        test
 | |  date:        Thu Jan 01 00:00:33 1970 +0000
 | |  summary:     (33) head
 | |
 o |    changeset:   32:77f7d8438a3c
 |\ \   parent:      27:e9e08174cd30
 | | |  parent:      31:82ee55204a79
 | | |  user:        test
 | | |  date:        Thu Jan 01 00:00:32 1970 +0000
 | | |  summary:     (32) expand
 | | |
 | o |    changeset:   31:82ee55204a79
 | |\ \   parent:      21:e758e8f4ace9
 | | | |  parent:      30:777dfc428649
 | | | |  user:        test
 | | | |  date:        Thu Jan 01 00:00:31 1970 +0000
 | | | |  summary:     (31) expand
 | | | |
 | | o |    changeset:   30:777dfc428649
 | | |\ \   parent:      28:4b6e9bd48cf9
 | | | | |  parent:      29:f8e7fee63353
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:30 1970 +0000
 | | | | |  summary:     (30) expand
 | | | | |
 | | | o |  changeset:   29:f8e7fee63353
 | | | | |  parent:      0:7aa22e58e8c1
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:29 1970 +0000
 | | | | |  summary:     (29) regular commit
 | | | | |
 | | o | |    changeset:   28:4b6e9bd48cf9
 | | |\ \ \   parent:      1:3cae7826a707
 | | | | | |  parent:      26:720dc079a855
 | | | | | |  user:        test
 | | | | | |  date:        Thu Jan 01 00:00:28 1970 +0000
 | | | | | |  summary:     (28) merge zero known
 | | | | | |
 o | | | | |  changeset:   27:e9e08174cd30
 |/ / / / /   parent:      21:e758e8f4ace9
 | | | | |    user:        test
 | | | | |    date:        Thu Jan 01 00:00:27 1970 +0000
 | | | | |    summary:     (27) collapse
 | | | | |
 | | o---+  changeset:   26:720dc079a855
 | | | | |  parent:      18:5a8c9a29ef81
 | | | | |  parent:      25:9d4ed048d013
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:26 1970 +0000
 | | | | |  summary:     (26) merge one known; far right
 | | | | |
 +---o | |  changeset:   25:9d4ed048d013
 | | | | |  parent:      21:e758e8f4ace9
 | | | | |  parent:      24:4a68967db00d
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:25 1970 +0000
 | | | | |  summary:     (25) merge one known; far left
 | | | | |
 | | o | |  changeset:   24:4a68967db00d
 | | |\| |  parent:      0:7aa22e58e8c1
 | | | | |  parent:      23:bc31393cabdf
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:24 1970 +0000
 | | | | |  summary:     (24) merge one known; immediate right
 | | | | |
 | | o | |  changeset:   23:bc31393cabdf
 | |/| | |  parent:      1:3cae7826a707
 | | | | |  parent:      22:a37f2ea6ebc6
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:23 1970 +0000
 | | | | |  summary:     (23) merge one known; immediate left
 | | | | |
 +---o---+  changeset:   22:a37f2ea6ebc6
 | |   | |  parent:      18:5a8c9a29ef81
 | |  / /   parent:      21:e758e8f4ace9
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:22 1970 +0000
 | | | |    summary:     (22) merge two known; one far left, one far right
 | | | |
 o | | |    changeset:   21:e758e8f4ace9
 |\ \ \ \   parent:      19:138069b5dad7
 | | | | |  parent:      20:aeccadad74b4
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:21 1970 +0000
 | | | | |  summary:     (21) expand
 | | | | |
 | o---+-+  changeset:   20:aeccadad74b4
 |   | | |  parent:      0:7aa22e58e8c1
 |  / / /   parent:      18:5a8c9a29ef81
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:20 1970 +0000
 | | | |    summary:     (20) merge two known; two far right
 | | | |
 o | | |    changeset:   19:138069b5dad7
 |\ \ \ \   parent:      15:c0b4283d4c1d
 | | | | |  parent:      17:43e52b935494
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:19 1970 +0000
 | | | | |  summary:     (19) expand
 | | | | |
 +---+---o  changeset:   18:5a8c9a29ef81
 | | | |    parent:      1:3cae7826a707
 | | | |    parent:      15:c0b4283d4c1d
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:18 1970 +0000
 | | | |    summary:     (18) merge two known; two far left
 | | | |
 | o | |    changeset:   17:43e52b935494
 | |\ \ \   parent:      12:74dc7aea4494
 | | | | |  parent:      16:449a2f9562a4
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:17 1970 +0000
 | | | | |  summary:     (17) expand
 | | | | |
 | | o---+  changeset:   16:449a2f9562a4
 | | | | |  parent:      0:7aa22e58e8c1
 | | |/ /   parent:      1:3cae7826a707
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:16 1970 +0000
 | | | |    summary:     (16) merge two known; one immediate right, one near right
 | | | |
 o | | |    changeset:   15:c0b4283d4c1d
 |\ \ \ \   parent:      13:c39d0a2b8165
 | | | | |  parent:      14:9d533950abf0
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:15 1970 +0000
 | | | | |  summary:     (15) expand
 | | | | |
 | o-----+  changeset:   14:9d533950abf0
 | | | | |  parent:      0:7aa22e58e8c1
 | |/ / /   parent:      12:74dc7aea4494
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:14 1970 +0000
 | | | |    summary:     (14) merge two known; one immediate right, one far right
 | | | |
 o | | |    changeset:   13:c39d0a2b8165
 |\ \ \ \   parent:      9:79ab1812f961
 | | | | |  parent:      11:c3c395dd8b98
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:13 1970 +0000
 | | | | |  summary:     (13) expand
 | | | | |
 +---o | |  changeset:   12:74dc7aea4494
 | | |/ /   parent:      1:3cae7826a707
 | | | |    parent:      9:79ab1812f961
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:12 1970 +0000
 | | | |    summary:     (12) merge two known; one immediate right, one far left
 | | | |
 | o | |    changeset:   11:c3c395dd8b98
 | |\ \ \   parent:      6:0ca7c061cf45
 | | | | |  parent:      10:8094c50149ef
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:11 1970 +0000
 | | | | |  summary:     (11) expand
 | | | | |
 | | o---+  changeset:   10:8094c50149ef
 | | | | |  parent:      0:7aa22e58e8c1
 | |/ / /   parent:      6:0ca7c061cf45
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:10 1970 +0000
 | | | |    summary:     (10) merge two known; one immediate left, one near right
 | | | |
 o | | |    changeset:   9:79ab1812f961
 |\ \ \ \   parent:      7:699392d1259e
 | | | | |  parent:      8:d7aa38594334
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:09 1970 +0000
 | | | | |  summary:     (9) expand
 | | | | |
 | o-----+  changeset:   8:d7aa38594334
 | | | | |  parent:      0:7aa22e58e8c1
 |/ / / /   parent:      7:699392d1259e
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:08 1970 +0000
 | | | |    summary:     (8) merge two known; one immediate left, one far right
 | | | |
 o | | |    changeset:   7:699392d1259e
 |\ \ \ \   parent:      2:e8ea2256f9ec
 | | | | |  parent:      5:3589c3c477ab
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:07 1970 +0000
 | | | | |  summary:     (7) expand
 | | | | |
 +---o | |  changeset:   6:0ca7c061cf45
 | |/ / /   parent:      2:e8ea2256f9ec
 | | | |    parent:      5:3589c3c477ab
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:06 1970 +0000
 | | | |    summary:     (6) merge two known; one immediate left, one far left
 | | | |
 | o | |    changeset:   5:3589c3c477ab
 | |\ \ \   parent:      3:02173ffbf857
 | | | | |  parent:      4:e2cad8233c77
 | | | | |  user:        test
 | | | | |  date:        Thu Jan 01 00:00:05 1970 +0000
 | | | | |  summary:     (5) expand
 | | | | |
 | | o | |  changeset:   4:e2cad8233c77
 | |/|/ /   parent:      1:3cae7826a707
 | | | |    parent:      3:02173ffbf857
 | | | |    user:        test
 | | | |    date:        Thu Jan 01 00:00:04 1970 +0000
 | | | |    summary:     (4) merge two known; one immediate left, one immediate right
 | | | |
 | o | |  changeset:   3:02173ffbf857
 |/ / /   user:        test
 | | |    date:        Thu Jan 01 00:00:03 1970 +0000
 | | |    summary:     (3) collapse
 | | |
 o | |  changeset:   2:e8ea2256f9ec
 |/ /   user:        test
 | |    date:        Thu Jan 01 00:00:02 1970 +0000
 | |    summary:     (2) collapse
 | |
 o |  changeset:   1:3cae7826a707
 |/   user:        test
 |    date:        Thu Jan 01 00:00:01 1970 +0000
 |    summary:     (1) collapse
 |
 o  changeset:   0:7aa22e58e8c1
    user:        test
    date:        Thu Jan 01 00:00:00 1970 +0000
    summary:     (0) root
 
+% unused arguments
+hg glog: invalid arguments
+hg glog [OPTION]...
+
+show revision history alongside an ASCII revision graph
+failed