core, plugins: fix typos in comments on functions, use imperative

src/plugins/fifo/fifo-command.c

@@ -88,7 +88,7 @@ fifo_command_fifo (const void *pointer, void *data,
 }
 
 /*
- * Hooks fifo command.
+ * Hook fifo command.
  */
 
 void

src/plugins/fifo/fifo-config.c

@@ -81,9 +81,9 @@ fifo_config_change_file_path (const void *pointer, void *data,
 }
 
 /*
- * Initializes fifo configuration file.
+ * Initialize fifo configuration file.
  *
- * Returns:
+ * Return:
  *   1: OK
  *   0: error
  */
@@ -132,7 +132,7 @@ fifo_config_init (void)
 }
 
 /*
- * Reads fifo configuration file.
+ * Read fifo configuration file.
  */
 
 int
@@ -142,7 +142,7 @@ fifo_config_read (void)
 }
 
 /*
- * Writes fifo configuration file.
+ * Write fifo configuration file.
  */
 
 int
@@ -152,7 +152,7 @@ fifo_config_write (void)
 }
 
 /*
- * Frees fifo configuration.
+ * Free fifo configuration.
  */
 
 void

src/plugins/fifo/fifo-info.c

@@ -29,7 +29,7 @@
 
 
 /*
- * Returns FIFO info "fifo_filename".
+ * Return FIFO info "fifo_filename".
  */
 
 char *
@@ -47,7 +47,7 @@ fifo_info_info_fifo_filename_cb (const void *pointer, void *data,
 }
 
 /*
- * Hooks info for fifo plugin.
+ * Hook info for fifo plugin.
  */
 
 void

src/plugins/fifo/fifo.c

@@ -60,7 +60,7 @@ int fifo_fd_cb (const void *pointer, void *data, int fd);
 
 
 /*
- * Creates FIFO pipe for remote control.
+ * Create FIFO pipe for remote control.
  */
 
 void
@@ -144,7 +144,7 @@ fifo_create (void)
 }
 
 /*
- * Removes FIFO pipe.
+ * Remove FIFO pipe.
  */
 
 void
@@ -189,7 +189,7 @@ fifo_remove (void)
 }
 
 /*
- * Executes a command/text received in FIFO pipe.
+ * Execute a command/text received in FIFO pipe.
  */
 
 void
@@ -262,7 +262,7 @@ fifo_exec (const char *text)
 }
 
 /*
- * Reads data in FIFO pipe.
+ * Read data in FIFO pipe.
  */
 
 int
@@ -345,7 +345,7 @@ fifo_fd_cb (const void *pointer, void *data, int fd)
 }
 
 /*
- * Initializes fifo plugin.
+ * Initialize fifo plugin.
  */
 
 int
@@ -378,7 +378,7 @@ weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[])
 }
 
 /*
- * Ends fifo plugin.
+ * End fifo plugin.
  */
 
 int