updates

pygmt/encodings.py

@@ -5,7 +5,7 @@
 
 >>> from pygmt.encodings import charset
 >>>
->>> mappings = charset["symbol"]
+>>> mappings = charset["Symbol"]
 >>>
 >>> undefined = "\ufffd"
 >>> markdown = "| octal | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |\n"
@@ -35,7 +35,7 @@
 #    same issue.
 # 3. Character \140 does not appear in Unicode.
 # 4. \ufffd means the character is undefined.
-charset["symbol"] = dict(
+charset["Symbol"] = dict(
     zip(
         [*range(0o040, 0o200), *range(0o240, 0o400)],
         "\u0020\u0021\u2200\u0023\u2203\u0025\u0026\u220b"
@@ -71,7 +71,7 @@
 # References:
 # 1. https://en.wikipedia.org/wiki/Zapf_Dingbats
 # 2. https://unicode.org/Public/MAPPINGS/VENDORS/ADOBE/zdingbat.txt
-charset["zdingbat"] = dict(
+charset["ZapfDingbats"] = dict(
     zip(
         [*range(0o040, 0o220), *range(0o240, 0o400)],
         "\u0020\u2701\u2702\u2703\u2704\u260e\u2706\u2707"
@@ -108,12 +108,21 @@
 #
 # References:
 # 1. https://en.wikipedia.org/wiki/ISO/IEC_8859-1
+# 2. https://en.wikipedia.org/wiki/PostScript_Latin_1_Encoding
 # 2. https://docs.generic-mapping-tools.org/dev/reference/octal-codes.html
 # 3. https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf
 # 4. https://github.com/adobe-type-tools/agl-aglfn/blob/master/aglfn.txt
 charset["ISOLatin1+"] = {
     i: chr(i) for i in [*range(0o040, 0o177), *range(0o241, 0o400)]
 }
+# \047 and \140 are apostrophe (') and backtick (`) in ISO-8859-1, but are right/left
+# single quotation marks (’ and ‘) in ISOLatin1+ Encoding.  # noqa: RUF003
+charset["ISOLatin1+"].update(
+    {
+        0o140: "\u2018",  # LEFT SINGLE QUOTATION MARK ‘ # noqa: RUF003
+        0o047: "\u2019",  # RIGHT SINGLE QUOTATION MARK ’ # noqa: RUF003
+    }
+)
 charset["ISOLatin1+"].update(
     dict(
         zip(

pygmt/helpers/utils.py

@@ -206,21 +206,21 @@ def data_kind(data=None, x=None, y=None, z=None, required_z=False, required_data
     return kind
 
 
-def non_ascii_to_octal(argstr):
+def non_ascii_to_octal(argstr: str) -> str:
     r"""
     Translate non-ASCII characters to their corresponding octal codes.
 
-    Currently, only characters in the ISOLatin1+ charset and
-    Symbol/ZapfDingbats fonts are supported.
+    Currently, only characters in the ISOLatin1+ charset and Symbol/ZapfDingbats fonts
+    are supported.
 
     Parameters
     ----------
-    argstr : str
+    argstr
         The string to be translated.
 
     Returns
     -------
-    translated_argstr : str
+    translated_argstr
         The translated string.
 
     Examples
@@ -241,14 +241,11 @@ def non_ascii_to_octal(argstr):
     # Dictionary mapping non-ASCII characters to octal codes
     mapping = {}
     # Adobe Symbol charset.
-    mapping.update({c: f"@~\\{i:03o}@~" for i, c in charset["symbol"].items()})
-    # Adobe ZDingbat charset.
-    mapping.update({c: f"@%34%\\{i:o}@%%" for i, c in charset["zdingbat"].items()})
-
-    # Adobe ISOLatin1+ charset (i.e., ISO-8859-1 with extensions).
+    mapping.update({c: f"@~\\{i:03o}@~" for i, c in charset["Symbol"].items()})
+    # Adobe ZapfDingbats charset.
+    mapping.update({c: f"@%34%\\{i:o}@%%" for i, c in charset["ZapfDingbats"].items()})
+    # Adobe ISOLatin1+ charset.
     mapping.update({c: f"\\{i:o}" for i, c in charset["ISOLatin1+"].items()})
-    mapping["\u2018"] = "\\140"  # LEFT SINGLE QUOTATION MARK ‘ # noqa: RUF003
-    mapping["\u2019"] = "\\047"  # RIGHT SINGLE QUOTATION MARK ’ # noqa: RUF003
 
     # Remove any printable characters
     mapping = {k: v for k, v in mapping.items() if k not in string.printable}