Make line length, wrapping and spacing consistent

doc_src/if.txt

@@ -10,22 +10,17 @@ end
 
 \subsection if-description Description
 
-`if` will execute the command `CONDITION`. If the condition's
-exit status is 0, the commands `COMMANDS_TRUE` will execute.  If the
-exit status is not 0 and `else` is given, `COMMANDS_FALSE` will
-be executed.
+`if` will execute the command `CONDITION`. If the condition's exit status is 0, the commands `COMMANDS_TRUE` will execute.  If the exit status is not 0 and `else` is given, `COMMANDS_FALSE` will be executed.
 
-In order to use the exit status of multiple commands as the condition
-of an if block, use <a href="#begin">`begin; ...; end`</a> and
-the short circuit commands <a href="commands.html#and">`and`</a>
-and <a href="commands.html#or">`or`</a>.
+In order to use the exit status of multiple commands as the condition of an if block, use <a href="#begin">`begin; ...; end`</a> and the short circuit commands <a href="commands.html#and">`and`</a> and <a href="commands.html#or">`or`</a>.
+
+The exit status of the last foreground command to exit can always be accessed using the <a href="index.html#variables-status">$status</a> variable.
 
-The exit status of the last foreground command to exit can always be
-accessed using the <a href="index.html#variables-status">$status</a>
-variable.
 
 \subsection if-example Example
 
+The following code will print `foo.txt exists` if the file foo.txt exists and is a regular file, otherwise it will print `bar.txt exists` if the file bar.txt exists and is a regular file, otherwise it will print `foo.txt and bar.txt do not exist`.
+
 \fish
 if test -f foo.txt
     echo foo.txt exists
@@ -35,9 +30,3 @@ else
     echo foo.txt and bar.txt do not exist
 end
 \endfish
-
-will print `foo.txt exists` if the file foo.txt
-exists and is a regular file, otherwise it will print
-`bar.txt exists` if the file bar.txt exists
-and is a regular file, otherwise it will print
-`foo.txt and bar.txt do not exist`.