Escape percents in legend and mm's in axis-label

Author: Gorshanov Vadim

src/tikzplotlib/_axes.py

@@ -1,5 +1,6 @@
 import matplotlib as mpl
 import numpy as np
+import re
 from matplotlib.backends.backend_pgf import (
     common_texification as mpl_common_texification,
 )
@@ -51,7 +52,7 @@ def __init__(self, data, obj):  # noqa: C901
             xlabel = _common_texification(xlabel)
 
             labelcolor = obj.xaxis.label.get_c()
-
+            xlabel = re.sub(r"\smm", r" \\si{\\mm}", xlabel)
             if labelcolor != "black":
                 data, col, _ = _color.mpl_color2xcolor(data, labelcolor)
                 self.axis_options.append(f"xlabel=\\textcolor{{{col}}}{{{xlabel}}}")

src/tikzplotlib/_line2d.py

@@ -1,6 +1,7 @@
 import datetime
 
 import numpy as np
+import re
 from matplotlib.dates import num2date
 
 from . import _color as mycol
@@ -100,7 +101,8 @@ def draw_line2d(data, obj):
     content += c
 
     if legend_text is not None:
-        content.append(f"\\addlegendentry{{{legend_text}}}\n")
+        legend_text_escaped = re.sub(r"(\d+(\.\d+)?)%", r"\\SI{\1}{\\percent}", legend_text)
+        content.append(f"\\addlegendentry{{{legend_text_escaped}}}\n")
 
     return data, content