Remove almost all unpaired backticks in docstrings (#119231)

As reported in #117847 and #115366, an unpaired backtick in a docstring
tends to confuse e.g. Sphinx running on subclasses of standard library
objects, and the typographic style of using a backtick as an opening
quote is no longer in favor. Convert almost all uses of the form

    The variable `foo' should do xyz

to

    The variable 'foo' should do xyz

and also fix up miscellaneous other unpaired backticks (extraneous /
missing characters).

No functional change is intended here other than in human-readable
docstrings.

2 files changed, 13 insertions, 13 deletions

diff --git a/Lib/_pyrepl/keymap.py b/Lib/_pyrepl/keymap.py
index 2fb03d1..d11df4b 100644
--- a/Lib/_pyrepl/keymap.py
+++ b/Lib/_pyrepl/keymap.py
@@ -30,20 +30,20 @@ sequence.
 pyrepl uses its own keyspec format that is meant to be a strict superset of
 readline's KEYSEQ format. This means that if a spec is found that readline
 accepts that this doesn't, it should be logged as a bug. Note that this means
-we're using the `\\C-o' style of readline's keyspec, not the `Control-o' sort.
+we're using the '\\C-o' style of readline's keyspec, not the 'Control-o' sort.
 
 The extension to readline is that the sequence \\<KEY> denotes the
 sequence of characters produced by hitting KEY.
 
 Examples:
-`a'      - what you get when you hit the `a' key
-`\\EOA'  - Escape - O - A (up, on my terminal)
-`\\<UP>' - the up arrow key
-`\\<up>' - ditto (keynames are case-insensitive)
-`\\C-o', `\\c-o'  - control-o
-`\\M-.'  - meta-period
-`\\E.'   - ditto (that's how meta works for pyrepl)
-`\\<tab>', `\\<TAB>', `\\t', `\\011', '\\x09', '\\X09', '\\C-i', '\\C-I'
+'a'      - what you get when you hit the 'a' key
+'\\EOA'  - Escape - O - A (up, on my terminal)
+'\\<UP>' - the up arrow key
+'\\<up>' - ditto (keynames are case-insensitive)
+'\\C-o', '\\c-o'  - control-o
+'\\M-.'  - meta-period
+'\\E.'   - ditto (that's how meta works for pyrepl)
+'\\<tab>', '\\<TAB>', '\\t', '\\011', '\\x09', '\\X09', '\\C-i', '\\C-I'
    - all of these are the tab character.
 """
 
diff --git a/Lib/_pyrepl/reader.py b/Lib/_pyrepl/reader.py
index 3dbfc34..768d45a 100644
--- a/Lib/_pyrepl/reader.py
+++ b/Lib/_pyrepl/reader.py
@@ -171,7 +171,7 @@ class Reader:
       * console:
         Hopefully encapsulates the OS dependent stuff.
       * pos:
-        A 0-based index into `buffer' for where the insertion point
+        A 0-based index into 'buffer' for where the insertion point
         is.
       * screeninfo:
         Ahem.  This list contains some info needed to move the
@@ -179,7 +179,7 @@ class Reader:
       * cxy, lxy:
         the position of the insertion point in screen ...
       * syntax_table:
-        Dictionary mapping characters to `syntax class'; read the
+        Dictionary mapping characters to 'syntax class'; read the
         emacs docs to see what this means :-)
       * commands:
         Dictionary mapping command names to command classes.
@@ -431,7 +431,7 @@ class Reader:
 
     def get_arg(self, default: int = 1) -> int:
         """Return any prefix argument that the user has supplied,
-        returning `default' if there is None.  Defaults to 1.
+        returning 'default' if there is None.  Defaults to 1.
         """
         if self.arg is None:
             return default
@@ -440,7 +440,7 @@ class Reader:
 
     def get_prompt(self, lineno: int, cursor_on_line: bool) -> str:
         """Return what should be in the left-hand margin for line
-        `lineno'."""
+        'lineno'."""
         if self.arg is not None and cursor_on_line:
             prompt = "(arg: %s) " % self.arg
         elif self.paste_mode: