bisect: avoid copying ancestor list for non-merge commits
During a bisection, hg needs to compute a list of all ancestors for every
candidate commit. This is accomplished via a bottom-up traversal of the set of
candidates, during which each revision's ancestor list is populated using the
ancestor list of its parent(s). Previously, this involved copying the entire
list, which could be very long in if the bisection range was large.
To help improve this, we can observe that each candidate commit is visited
exactly once, at which point its ancestor list is copied into its children's
lists and then dropped. In the case of non-merge commits, a commit's ancestor
list consists exactly of its parent's list plus itself. This means that we can
trivially reuse the parent's existing list for one of its non-merge children,
which avoids copying entirely if that commit is the parent's only child. This
makes bisections over linear ranges of commits much faster.
During some informal testing in the large publicly-available `mozilla-central`
repository, this noticeably sped up bisections over large ranges of history:
Setup:
$ cd mozilla-central
$ hg bisect --reset
$ hg bisect --good 0
$ hg log -r tip -T '{rev}\n'
628417
Test:
$ time hg bisect --bad tip --noupdate
Before:
real 3m35.927s
user 3m35.553s
sys 0m0.319s
After:
real 1m41.142s
user 1m40.810s
sys 0m0.285s
#require pygments serve
$ cat <<EOF >> $HGRCPATH
> [extensions]
> highlight =
> [web]
> pygments_style = friendly
> highlightfiles = **.py and size('<100KB')
> EOF
$ hg init test
$ cd test
$ filterhtml () {
> sed -e "s/class=\"k\"/class=\"kn\"/g" \
> -e "s/class=\"mf\"/class=\"mi\"/g" \
> -e "s/class=\"vm\"/class=\"n\"/g" \
> -e "s/class=\"\([cs]\)[h12]\"/class=\"\1\"/g"
> }
create random Python file to exercise Pygments
$ cat <<NO_CHECK_EOF > primes.py
> """Fun with generators. Corresponding Haskell implementation:
>
> primes = 2 : sieve [3, 5..]
> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]
> """
>
> import itertools
>
> def primes():
> """Generate all primes."""
> def sieve(ns):
> p = ns.next()
> # It is important to yield *here* in order to stop the
> # infinite recursion.
> yield p
> ns = itertools.ifilter(lambda n: n % p != 0, ns)
> for n in sieve(ns):
> yield n
>
> odds = itertools.ifilter(lambda i: i % 2 == 1, itertools.count())
> dropwhile = itertools.dropwhile
> return itertools.chain([2], sieve(dropwhile(lambda n: n < 3, odds)))
>
> if __name__ == "__main__":
> import sys
> try:
> n = int(sys.argv[1])
> except (ValueError, IndexError):
> n = 10
> p = primes()
> print("The first %d primes: %s" % (n, list(itertools.islice(p, n))))
> NO_CHECK_EOF
$ echo >> primes.py # to test html markup with an empty line just before EOF
$ hg ci -Ama
adding primes.py
hg serve
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
hgweb filerevision, html
$ (get-with-headers.py localhost:$HGPORT 'file/tip/primes.py') | filterhtml
200 Script output follows
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<pre class="sourcelines stripes4 wrap bottomline"
data-logurl="/log/tip/primes.py"
data-selectabletag="SPAN"
data-ishead="1">
<span id="l1"><span class="sd">"""Fun with generators. Corresponding Haskell implementation:</span></span><a href="#l1"></a>
<span id="l2"></span><a href="#l2"></a>
<span id="l3"><span class="sd">primes = 2 : sieve [3, 5..]</span></span><a href="#l3"></a>
<span id="l4"><span class="sd"> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]</span></span><a href="#l4"></a>
<span id="l5"><span class="sd">"""</span></span><a href="#l5"></a>
<span id="l6"></span><a href="#l6"></a>
<span id="l7"><span class="kn">import</span> <span class="nn">itertools</span></span><a href="#l7"></a>
<span id="l8"></span><a href="#l8"></a>
<span id="l9"><span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></span><a href="#l9"></a>
<span id="l10"> <span class="sd">"""Generate all primes."""</span></span><a href="#l10"></a>
<span id="l11"> <span class="kn">def</span> <span class="nf">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></span><a href="#l11"></a>
<span id="l12"> <span class="n">p</span> <span class="o">=</span> <span class="n">ns</span><span class="o">.</span><span class="n">next</span><span class="p">()</span></span><a href="#l12"></a>
<span id="l13"> <span class="c"># It is important to yield *here* in order to stop the</span></span><a href="#l13"></a>
<span id="l14"> <span class="c"># infinite recursion.</span></span><a href="#l14"></a>
<span id="l15"> <span class="kn">yield</span> <span class="n">p</span></span><a href="#l15"></a>
<span id="l16"> <span class="n">ns</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o">%</span> <span class="n">p</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">ns</span><span class="p">)</span></span><a href="#l16"></a>
<span id="l17"> <span class="kn">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="n">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></span><a href="#l17"></a>
<span id="l18"> <span class="kn">yield</span> <span class="n">n</span></span><a href="#l18"></a>
<span id="l19"></span><a href="#l19"></a>
<span id="l20"> <span class="n">odds</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">i</span><span class="p">:</span> <span class="n">i</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">1</span><span class="p">,</span> <span class="n">itertools</span><span class="o">.</span><span class="n">count</span><span class="p">())</span></span><a href="#l20"></a>
<span id="l21"> <span class="n">dropwhile</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">dropwhile</span></span><a href="#l21"></a>
<span id="l22"> <span class="kn">return</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">([</span><span class="mi">2</span><span class="p">],</span> <span class="n">sieve</span><span class="p">(</span><span class="n">dropwhile</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o"><</span> <span class="mi">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></span><a href="#l22"></a>
<span id="l23"></span><a href="#l23"></a>
<span id="l24"><span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">"__main__"</span><span class="p">:</span></span><a href="#l24"></a>
<span id="l25"> <span class="kn">import</span> <span class="nn">sys</span></span><a href="#l25"></a>
<span id="l26"> <span class="kn">try</span><span class="p">:</span></span><a href="#l26"></a>
<span id="l27"> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span></span><a href="#l27"></a>
<span id="l28"> <span class="kn">except</span> <span class="p">(</span><span class="ne">ValueError</span><span class="p">,</span> <span class="ne">IndexError</span><span class="p">):</span></span><a href="#l28"></a>
<span id="l29"> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></span><a href="#l29"></a>
<span id="l30"> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></span><a href="#l30"></a>
<span id="l31"> <span class="nb">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">itertools</span><span class="o">.</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></span><a href="#l31"></a> (pygments25 !)
<span id="l31"> <span class="kn">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">itertools</span><span class="o">.</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></span><a href="#l31"></a> (no-pygments25 !)
<span id="l32"></span><a href="#l32"></a>
</pre>
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<td class="source followlines-btn-parent"><a href="#l1"> 1</a> <span class="sd">"""Fun with generators. Corresponding Haskell implementation:</span></td>
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<td class="source followlines-btn-parent"><a href="#l2"> 2</a> </td>
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<td class="source followlines-btn-parent"><a href="#l3"> 3</a> <span class="sd">primes = 2 : sieve [3, 5..]</span></td>
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<td class="source followlines-btn-parent"><a href="#l4"> 4</a> <span class="sd"> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]</span></td>
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<td class="source followlines-btn-parent"><a href="#l5"> 5</a> <span class="sd">"""</span></td>
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<td class="source followlines-btn-parent"><a href="#l6"> 6</a> </td>
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<td class="source followlines-btn-parent"><a href="#l7"> 7</a> <span class="kn">import</span> <span class="nn">itertools</span></td>
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<td class="source followlines-btn-parent"><a href="#l8"> 8</a> </td>
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<td class="source followlines-btn-parent"><a href="#l9"> 9</a> <span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></td>
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<td class="source followlines-btn-parent"><a href="#l10"> 10</a> <span class="sd">"""Generate all primes."""</span></td>
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<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l11"> 11</a> <span class="kn">def</span> <span class="nf">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></td>
</tr>
<tr id="l12" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l12">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l12"> 12</a> <span class="n">p</span> <span class="o">=</span> <span class="n">ns</span><span class="o">.</span><span class="n">next</span><span class="p">()</span></td>
</tr>
<tr id="l13" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l13">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l13"> 13</a> <span class="c"># It is important to yield *here* in order to stop the</span></td>
</tr>
<tr id="l14" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l14">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l14"> 14</a> <span class="c"># infinite recursion.</span></td>
</tr>
<tr id="l15" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l15">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l15"> 15</a> <span class="kn">yield</span> <span class="n">p</span></td>
</tr>
<tr id="l16" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l16">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l16"> 16</a> <span class="n">ns</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o">%</span> <span class="n">p</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">ns</span><span class="p">)</span></td>
</tr>
<tr id="l17" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l17">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l17"> 17</a> <span class="kn">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="n">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></td>
</tr>
<tr id="l18" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l18">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l18"> 18</a> <span class="kn">yield</span> <span class="n">n</span></td>
</tr>
<tr id="l19" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l19">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l19"> 19</a> </td>
</tr>
<tr id="l20" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l20">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l20"> 20</a> <span class="n">odds</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">i</span><span class="p">:</span> <span class="n">i</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">1</span><span class="p">,</span> <span class="n">itertools</span><span class="o">.</span><span class="n">count</span><span class="p">())</span></td>
</tr>
<tr id="l21" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l21">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l21"> 21</a> <span class="n">dropwhile</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">dropwhile</span></td>
</tr>
<tr id="l22" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l22">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l22"> 22</a> <span class="kn">return</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">([</span><span class="mi">2</span><span class="p">],</span> <span class="n">sieve</span><span class="p">(</span><span class="n">dropwhile</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o"><</span> <span class="mi">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></td>
</tr>
<tr id="l23" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l23">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l23"> 23</a> </td>
</tr>
<tr id="l24" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l24">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l24"> 24</a> <span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">"__main__"</span><span class="p">:</span></td>
</tr>
<tr id="l25" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l25">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l25"> 25</a> <span class="kn">import</span> <span class="nn">sys</span></td>
</tr>
<tr id="l26" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l26">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l26"> 26</a> <span class="kn">try</span><span class="p">:</span></td>
</tr>
<tr id="l27" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l27">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l27"> 27</a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span></td>
</tr>
<tr id="l28" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l28">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l28"> 28</a> <span class="kn">except</span> <span class="p">(</span><span class="ne">ValueError</span><span class="p">,</span> <span class="ne">IndexError</span><span class="p">):</span></td>
</tr>
<tr id="l29" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l29">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l29"> 29</a> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></td>
</tr>
<tr id="l30" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l30">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l30"> 30</a> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></td>
</tr>
<tr id="l31" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l31">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l31"> 31</a> <span class="nb">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">itertools</span><span class="o">.</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></td> (pygments25 !)
<td class="source followlines-btn-parent"><a href="#l31"> 31</a> <span class="kn">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">itertools</span><span class="o">.</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></td> (no-pygments25 !)
</tr>
<tr id="l32" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l32">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l32"> 32</a> </td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<script type="text/javascript" src="/static/followlines.js"></script>
</body>
</html>
hgweb fileannotate, raw
$ (get-with-headers.py localhost:$HGPORT 'annotate/tip/primes.py?style=raw') \
> | sed "s/test@//" > a
$ echo "200 Script output follows" > b
$ echo "" >> b
$ echo "" >> b
$ hg annotate "primes.py" >> b
$ echo "" >> b
$ echo "" >> b
$ echo "" >> b
$ echo "" >> b
$ cmp b a || diff -u b a
hgweb filerevision, raw
$ (get-with-headers.py localhost:$HGPORT 'file/tip/primes.py?style=raw') \
> > a
$ echo "200 Script output follows" > b
$ echo "" >> b
$ hg cat primes.py >> b
$ cmp b a || diff -u b a
hgweb highlightcss friendly
$ get-with-headers.py localhost:$HGPORT 'highlightcss' > out
$ head -n 4 out
200 Script output follows
/* pygments_style = friendly */
$ rm out
errors encountered
$ cat errors.log
$ killdaemons.py
Change the pygments style
$ cat > .hg/hgrc <<EOF
> [web]
> pygments_style = fruity
> EOF
hg serve again
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
hgweb highlightcss fruity
$ get-with-headers.py localhost:$HGPORT 'highlightcss' > out
$ head -n 4 out
200 Script output follows
/* pygments_style = fruity */
$ rm out
errors encountered
$ cat errors.log
$ killdaemons.py
only highlight C source files
$ cat > .hg/hgrc <<EOF
> [web]
> highlightfiles = **.c
> EOF
hg serve again
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
test that fileset in highlightfiles works and primes.py is not highlighted
$ get-with-headers.py localhost:$HGPORT 'file/tip/primes.py' | grep 'id="l11"'
<span id="l11"> def sieve(ns):</span><a href="#l11"></a>
errors encountered
$ cat errors.log
$ cd ..
$ hg init eucjp
$ cd eucjp
>>> with open('eucjp.txt', 'wb') as fh:
... # Japanese kanji "Kyo"
... fh.write(u'\265\376'.encode('utf-8')) and None
$ hg ci -Ama
adding eucjp.txt
$ hgserveget () {
> killdaemons.py
> echo % HGENCODING="$1" hg serve
> HGENCODING="$1" hg serve -p $HGPORT -d -n test --pid-file=hg.pid -E errors.log
> cat hg.pid >> $DAEMON_PIDS
>
> echo % hgweb filerevision, html
> get-with-headers.py localhost:$HGPORT "file/tip/$2" \
> | grep '<div class="parity0 source">'
> echo % errors encountered
> cat errors.log
> }
$ hgserveget euc-jp eucjp.txt
% HGENCODING=euc-jp hg serve
% hgweb filerevision, html
% errors encountered
$ hgserveget utf-8 eucjp.txt
% HGENCODING=utf-8 hg serve
% hgweb filerevision, html
% errors encountered
$ hgserveget us-ascii eucjp.txt
% HGENCODING=us-ascii hg serve
% hgweb filerevision, html
% errors encountered
We attempt to highlight unknown files by default
$ killdaemons.py
$ cat > .hg/hgrc << EOF
> [web]
> highlightfiles = **
> EOF
$ cat > unknownfile << EOF
> #!$PYTHON
> def foo():
> pass
> EOF
$ hg add unknownfile
$ hg commit -m unknown unknownfile
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ get-with-headers.py localhost:$HGPORT 'file/tip/unknownfile' | grep l2
<span id="l2"><span class="k">def</span> <span class="nf">foo</span><span class="p">():</span></span><a href="#l2"></a>
We can prevent Pygments from falling back to a non filename-based
detection mode
$ cat > .hg/hgrc << EOF
> [web]
> highlightfiles = **
> highlightonlymatchfilename = true
> EOF
$ killdaemons.py
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ get-with-headers.py localhost:$HGPORT 'file/tip/unknownfile' | grep l2
<span id="l2">def foo():</span><a href="#l2"></a>
$ cd ..