Merge branch 'jn/doc-backslash'

* jn/doc-backslash:
  Documentation: remove stray backslash in show-branch discussion
  Documentation: remove stray backslashes from "Fighting regressions" article
  Documentation: do not convert ... operator to ellipses
  Documentation: avoid stray backslash in user manual
  Documentation: avoid stray backslashes in core tutorial
  Documentation: remove stray backslashes in rev-parse manual
  Documentation: remove backslash before ~ in fast-import manual
  Documentation: remove stray backslash from "git bundle" manual
  Documentation/technical: avoid stray backslash in parse-options API docs
  Documentation: remove backslashes in manpage synopses
  Documentation: clarify quoting in gitignore docs
  Documentation: clarify quoting in "git rm" example
  Documentation: add missing quotes to "git grep" examples
  Documentation: clarify quoting in "git add" example
  Documentation: unbreak regex in show-ref manual
  Documentation: quoting trouble in "git rm" discussion
  Documentation: tweak description of log.date

Documentation/technical/api-parse-options.txt

@@ -201,7 +201,7 @@ The last element of the array must be `OPT_END()`.
 If not stated otherwise, interpret the arguments as follows:
 
 * `short` is a character for the short option
-  (e.g. `\'e\'` for `-e`, use `0` to omit),
+  (e.g. `{apostrophe}e{apostrophe}` for `-e`, use `0` to omit),
 
 * `long` is a string for the long option
   (e.g. `"example"` for `\--example`, use `NULL` to omit),
@@ -228,10 +228,10 @@ The function must be defined in this form:
 The callback mechanism is as follows:
 
 * Inside `func`, the only interesting member of the structure
-  given by `opt` is the void pointer `opt->value`.
-  `\*opt->value` will be the value that is saved into `var`, if you
+  given by `opt` is the void pointer `opt\->value`.
+  `\*opt\->value` will be the value that is saved into `var`, if you
   use `OPT_CALLBACK()`.
-  For example, do `*(unsigned long *)opt->value = 42;` to get 42
+  For example, do `*(unsigned long *)opt\->value = 42;` to get 42
   into an `unsigned long` variable.
 
 * Return value `0` indicates success and non-zero return