doc: fix merge-base ASCII art tab spacing

The doc-tool stack does not always respect the 'tab = 8 spaces' rule, particularly the git-scm doc pages https://git-scm.com/docs/git-merge-base and the Git generated html pages. Use just spaces within the block of the ascii art. Noticed when reviewing Junio's suggested update to `git merge-base` https://public-inbox.org/git/xmqqmvi2sj8f.fsf@gitster.mtv.corp.google.com/T/#u Signed-off-by: Philip Oakley <philipoakley@iee.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Philip Oakley committed Oct 21, 2016 at 00:40 UTC 5dd05ebf6f963a7844cc8208b6c8170698aec222
1 file changed +13 -13
Documentation/git-merge-base.txt
+13 -13
@@ -80,8 +80,8 @@ which is reachable from both 'A' and 'B' through the parent relationship.
80
81 For example, with this topology:
82
83 - o---o---o---B
84 - /
83 + o---o---o---B
84 + /
85 ---o---1---o---o---o---A
86
87 the merge base between 'A' and 'B' is '1'.
@@ -116,11 +116,11 @@ the best common ancestor of all commits.
116 When the history involves criss-cross merges, there can be more than one
117 'best' common ancestor for two commits. For example, with this topology:
118
119 - ---1---o---A
120 - \ /
121 - X
122 - / \
123 - ---2---o---o---B
119 + ---1---o---A
120 + \ /
121 + X
122 + / \
123 + ---2---o---o---B
124
125 both '1' and '2' are merge-bases of A and B. Neither one is better than
126 the other (both are 'best' merge bases). When the `--all` option is not given,
@@ -154,13 +154,13 @@ topic origin/master`, the history of remote-tracking branch
154 `origin/master` may have been rewound and rebuilt, leading to a
155 history of this shape:
156
157 - o---B1
158 - /
157 + o---B1
158 + /
159 ---o---o---B2--o---o---o---B (origin/master)
160 - \
161 - B3
162 - \
163 - Derived (topic)
160 + \
161 + B3
162 + \
163 + Derived (topic)
164
165 where `origin/master` used to point at commits B3, B2, B1 and now it
166 points at B, and your `topic` branch was started on top of it back