Fix pointer-to-paramref syntax in docs

The documentation for GLib and Gio contains a number of documentation
comment blocks where a parameter reference (e.g. `@err`) is also
discussed in its dereferenced pointer form, which is generally
annotated as `*@err`. This inevitably confuses the MarkDown parser,
which sees the `*` as the beginning of an italicized text span.

To avoid this, replace all `*@foo` with <code>`*foo`</code>, which
loses the `@`-sigil linking it to the `@foo` parameter, but formats
correctly in the rendered documentation. (`@foo` is automatically
formatted like <code>`foo`</code>, so the resulting appearance in
the docs is as intended.)

gio/gdbuserror.c

@@ -597,7 +597,7 @@ g_dbus_error_new_for_dbus_error (const gchar *dbus_error_name,
  * @format: (nullable): printf()-style format to prepend to @dbus_error_message or %NULL.
  * @...: Arguments for @format.
  *
- * Does nothing if @error is %NULL. Otherwise sets *@error to
+ * Does nothing if @error is %NULL. Otherwise sets `*error` to
  * a new #GError created with g_dbus_error_new_for_dbus_error()
  * with @dbus_error_message prepend with @format (unless %NULL).
  *

gio/gsocketaddressenumerator.c

@@ -81,13 +81,13 @@ g_socket_address_enumerator_class_init (GSocketAddressEnumeratorClass *enumerato
  * If @enumerator is expected to yield addresses, but for some reason
  * is unable to (eg, because of a DNS error), then the first call to
  * g_socket_address_enumerator_next() will return an appropriate error
- * in *@error. However, if the first call to
+ * in `*error`. However, if the first call to
  * g_socket_address_enumerator_next() succeeds, then any further
  * internal errors (other than @cancellable being triggered) will be
  * ignored.
  *
  * Returns: (transfer full) (nullable): a #GSocketAddress (owned by the caller), or %NULL on
- *     error (in which case *@error will be set) or if there are no
+ *     error (in which case `*error` will be set) or if there are no
  *     more addresses.
  */
 GSocketAddress *
@@ -181,7 +181,7 @@ g_socket_address_enumerator_real_next_finish (GSocketAddressEnumerator  *enumera
  * error handling.
  *
  * Returns: (transfer full) (nullable): a #GSocketAddress (owned by the caller), or %NULL on
- *     error (in which case *@error will be set) or if there are no
+ *     error (in which case `*error` will be set) or if there are no
  *     more addresses.
  */
 GSocketAddress *

glib/gerror.c

@@ -469,8 +469,8 @@ g_error_matches (const GError *error,
  * @format: printf()-style format
  * @...: args for @format
  *
- * Does nothing if @err is %NULL; if @err is non-%NULL, then *@err
- * must be %NULL. A new #GError is created and assigned to *@err.
+ * Does nothing if @err is %NULL; if @err is non-%NULL, then `*err`
+ * must be %NULL. A new #GError is created and assigned to `*err`.
  */
 void
 g_set_error (GError      **err,
@@ -506,8 +506,8 @@ g_set_error (GError      **err,
  * @code: error code
  * @message: error message
  *
- * Does nothing if @err is %NULL; if @err is non-%NULL, then *@err
- * must be %NULL. A new #GError is created and assigned to *@err.
+ * Does nothing if @err is %NULL; if @err is non-%NULL, then `*err`
+ * must be %NULL. A new #GError is created and assigned to `*err`.
  * Unlike g_set_error(), @message is not a printf()-style format string.
  * Use this function if @message contains text you don't have control over,
  * that could include printf() escape sequences.
@@ -534,7 +534,7 @@ g_set_error_literal (GError      **err,
  * @dest: (out callee-allocates) (optional) (nullable): error return location
  * @src: (transfer full): error to move into the return location
  *
- * If @dest is %NULL, free @src; otherwise, moves @src into *@dest.
+ * If @dest is %NULL, free @src; otherwise, moves @src into `*dest`.
  * The error variable @dest points to must be %NULL.
  *
  * @src must be non-%NULL.
@@ -570,8 +570,8 @@ g_propagate_error (GError **dest,
  * g_clear_error:
  * @err: a #GError return location
  *
- * If @err or *@err is %NULL, does nothing. Otherwise,
- * calls g_error_free() on *@err and sets *@err to %NULL.
+ * If @err or `*err` is %NULL, does nothing. Otherwise,
+ * calls g_error_free() on `*err` and sets `*err` to %NULL.
  */
 void
 g_clear_error (GError **err)
@@ -609,7 +609,7 @@ g_error_add_prefix (gchar       **string,
  * error message. If @err is %NULL (ie: no error variable) then do
  * nothing.
  *
- * If *@err is %NULL (ie: an error variable is present but there is no
+ * If `*err` is %NULL (ie: an error variable is present but there is no
  * error condition) then also do nothing.
  *
  * Since: 2.16
@@ -634,7 +634,7 @@ g_prefix_error (GError      **err,
  * @err: (inout) (nullable) (optional): a return location for a #GError, or %NULL
  * @prefix: string to prefix @err with
  *
- * Prefixes @prefix to an existing error message. If @err or *@err is
+ * Prefixes @prefix to an existing error message. If @err or `*err` is
  * %NULL (i.e.: no error variable) then do nothing.
  *
  * Since: 2.70
@@ -660,8 +660,8 @@ g_prefix_error_literal (GError      **err,
  * @format: printf()-style format string
  * @...: arguments to @format
  *
- * If @dest is %NULL, free @src; otherwise, moves @src into *@dest.
- * *@dest must be %NULL. After the move, add a prefix as with
+ * If @dest is %NULL, free @src; otherwise, moves @src into `*dest`.
+ * `*dest` must be %NULL. After the move, add a prefix as with
  * g_prefix_error().
  *
  * Since: 2.16

glib/gthread.c

@@ -748,7 +748,7 @@ gboolean
  * g_once_init_leave:
  * @location: (inout) (not optional): location of a static initializable variable
  *    containing 0
- * @result: new non-0 value for *@value_location
+ * @result: new non-0 value for `*value_location`
  *
  * Counterpart to g_once_init_enter(). Expects a location of a static
  * 0-initialized initialization variable, and an initialization value

glib/gunidecomp.c

@@ -605,10 +605,10 @@ decompose_hangul_step (gunichar  ch,
  * decompositions. It does, however, include algorithmic
  * Hangul Jamo decomposition, as well as 'singleton'
  * decompositions which replace a character by a single
- * other character. In the case of singletons *@b will
+ * other character. In the case of singletons `*b` will
  * be set to zero.
  *
- * If @ch is not decomposable, *@a is set to @ch and *@b
+ * If @ch is not decomposable, `*a` is set to @ch and `*b`
  * is set to zero.
  *
  * Note that the way Unicode decomposition pairs are