small fixes for tables

src/tikzplotlib/_line2d.py

@@ -263,17 +263,6 @@ def _table(obj, data):  # noqa: C901
         # don't want the \n in the table definition, just in the data (below)
         opts.append("row sep=" + data["table_row_sep"].strip())
 
-    if data["externalize tables"] and data["externals search path"] is not None:
-        esp = data["externals search path"]
-        opts.append(f"search path={{{esp}}}")
-
-    if len(opts) > 0:
-        opts_str = ",".join(opts)
-        content.append(f"table [{opts_str}] {{")
-    else:
-        content.append("table {")
-
-    plot_table = []
     table_row_sep = data["table_row_sep"]
     ydata[ydata_mask] = np.nan
     if np.any(ydata_mask) or ~np.all(np.isfinite(ydata)):
@@ -283,18 +272,34 @@ def _table(obj, data):  # noqa: C901
         if "unbounded coords=jump" not in data["current axes"].axis_options:
             data["current axes"].axis_options.append("unbounded coords=jump")
 
-    for x, y in zip(xdata, ydata):
-        plot_table.append(f"{x:{xformat}}{col_sep}{y:{ff}}{table_row_sep}")
+    plot_table = [
+        f"{x:{xformat}}{col_sep}{y:{ff}}{table_row_sep}" for x, y in zip(xdata, ydata)
+    ]
+
+    min_extern_length = 3
 
-    if data["externalize tables"]:
+    if data["externalize tables"] and len(xdata) >= min_extern_length:
         filepath, rel_filepath = _files.new_filepath(data, "table", ".dat")
         with open(filepath, "w") as f:
             # No encoding handling required: plot_table is only ASCII
             f.write("".join(plot_table))
-        content.append(str(rel_filepath))
+
+        if data["externals search path"] is not None:
+            esp = data["externals search path"]
+            opts.append(f"search path={{{esp}}}")
+
+        if len(opts) > 0:
+            opts_str = ",".join(opts)
+            content.append(f"table [{opts_str}] {{{rel_filepath}}};\n")
+        else:
+            content.append(f"table {{{rel_filepath}}};\n")
     else:
-        content.append("%\n")
+        if len(opts) > 0:
+            opts_str = ",".join(opts)
+            content.append(f"table [{opts_str}] {{%\n")
+        else:
+            content.append("table {%\n")
         content.extend(plot_table)
+        content.append("};\n")
 
-    content.append("};\n")
     return content, axis_options

src/tikzplotlib/_save.py

@@ -218,7 +218,7 @@ def get_tikz_code(
     code = """"""
 
     if include_disclaimer:
-        disclaimer = f"This file was created by tikzplotlib v{__version__}."
+        disclaimer = f"This file was created with tikzplotlib v{__version__}."
         code += _tex_comment(disclaimer)
 
     # write the contents