From ffe069dfb9ca36a65acf4096fa1c0ada6d4e4da5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADctor=20Zabalza?= <vzabalza@gmail.com>
Date: Tue, 19 Jan 2016 12:24:21 +0000
Subject: [PATCH 1/2] Fix apostrophes as primes

Fixes #5864
---
 lib/matplotlib/mathtext.py            | 8 +++++++-
 lib/matplotlib/tests/test_mathtext.py | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/matplotlib/mathtext.py b/lib/matplotlib/mathtext.py
index 126fef3e27a4..9ae5a6b56869 100644
--- a/lib/matplotlib/mathtext.py
+++ b/lib/matplotlib/mathtext.py
@@ -2852,12 +2852,15 @@ def subsuper(self, s, loc, toks):
         sub = None
         super = None
 
-        # Pick all of the apostrophe's out
+        # Pick all of the apostrophes out, including first apostrophes that have
+        # been parsed as characters
         napostrophes = 0
         new_toks = []
         for tok in toks[0]:
             if isinstance(tok, six.string_types) and tok not in ('^', '_'):
                 napostrophes += len(tok)
+            elif isinstance(tok, Char) and tok.c == "'":
+                napostrophes += 1
             else:
                 new_toks.append(tok)
         toks = new_toks
@@ -2912,6 +2915,9 @@ def subsuper(self, s, loc, toks):
                 super = Hlist([])
             for i in range(napostrophes):
                 super.children.extend(self.symbol(s, loc, ['\prime']))
+            # kern() and hpack() needed to get the metrics right after extending
+            super.kern()
+            super.hpack()
 
         # Handle over/under symbols, such as sum or integral
         if self.is_overunder(nucleus):
diff --git a/lib/matplotlib/tests/test_mathtext.py b/lib/matplotlib/tests/test_mathtext.py
index eeac74ad3878..4486e2d22f00 100644
--- a/lib/matplotlib/tests/test_mathtext.py
+++ b/lib/matplotlib/tests/test_mathtext.py
@@ -43,7 +43,7 @@
     r"$\gamma = \frac{x=\frac{6}{8}}{y} \delta$",
     r'$\limsup_{x\to\infty}$',
     r'$\oint^\infty_0$',
-    r"$f'$",
+    r"$f'\quad f'''(x)\quad ''/\mathrm{yr}$",
     r'$\frac{x_2888}{y}$',
     r"$\sqrt[3]{\frac{X_2}{Y}}=5$",
     r"$\sqrt[5]{\prod^\frac{x}{2\pi^2}_\infty}$",

From 736138b3f7258b1bae56407cf197ab6fd4c2e6ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADctor=20Zabalza?= <vzabalza@gmail.com>
Date: Tue, 19 Jan 2016 12:25:22 +0000
Subject: [PATCH 2/2] update mathtext test 31 baseline

---
 .../test_mathtext/mathtext_cm_31.pdf          | Bin 5456 -> 9866 bytes
 .../test_mathtext/mathtext_cm_31.png          | Bin 835 -> 2145 bytes
 .../test_mathtext/mathtext_cm_31.svg          | 231 ++++++++++++++++--
 .../test_mathtext/mathtext_dejavusans_31.pdf  | Bin 5127 -> 8309 bytes
 .../test_mathtext/mathtext_dejavusans_31.png  | Bin 771 -> 2183 bytes
 .../test_mathtext/mathtext_dejavusans_31.svg  | 122 +++++++--
 .../test_mathtext/mathtext_dejavuserif_31.pdf | Bin 5236 -> 8512 bytes
 .../test_mathtext/mathtext_dejavuserif_31.png | Bin 855 -> 2277 bytes
 .../test_mathtext/mathtext_dejavuserif_31.svg | 144 +++++++++--
 .../test_mathtext/mathtext_stix_31.pdf        | Bin 5409 -> 7628 bytes
 .../test_mathtext/mathtext_stix_31.png        | Bin 814 -> 1993 bytes
 .../test_mathtext/mathtext_stix_31.svg        | 154 +++++++++++-
 .../test_mathtext/mathtext_stixsans_31.pdf    | Bin 5310 -> 7099 bytes
 .../test_mathtext/mathtext_stixsans_31.png    | Bin 729 -> 1889 bytes
 .../test_mathtext/mathtext_stixsans_31.svg    |  94 ++++++-
 15 files changed, 686 insertions(+), 59 deletions(-)

diff --git a/lib/matplotlib/tests/baseline_images/test_mathtext/mathtext_cm_31.pdf b/lib/matplotlib/tests/baseline_images/test_mathtext/mathtext_cm_31.pdf
index ee8cc7b4cc2d58c99b86832b88674e435db859ab..532b5cefcfad9496529db2eb5d69d6a2c398c292 100644
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