Fix header file indentation after M_ prefix renaming.

The use of tabs caused misalignment of various macro definitions.

copy.h

···
  */ 
 
 /* flags to _mutt_copy_message */
-#define MUTT_CM_NOHEADER	1	/* don't copy the message header */
-#define MUTT_CM_PREFIX	(1<<1)	/* quote the message */
-#define MUTT_CM_DECODE	(1<<2)	/* decode the message body into text/plain */
-#define MUTT_CM_DISPLAY	(1<<3)	/* output is displayed to the user */
-#define MUTT_CM_UPDATE	(1<<4)  /* update structs on sync */
-#define MUTT_CM_WEED	(1<<5)  /* weed message/rfc822 attachment headers */
-#define MUTT_CM_CHARCONV	(1<<6)  /* perform character set conversions */
-#define MUTT_CM_PRINTING	(1<<7)	/* printing the message - display light */
-#define MUTT_CM_REPLYING	(1<<8)	/* replying the message */
+#define MUTT_CM_NOHEADER        1       /* don't copy the message header */
+#define MUTT_CM_PREFIX          (1<<1)  /* quote the message */
+#define MUTT_CM_DECODE          (1<<2)  /* decode the message body into text/plain */
+#define MUTT_CM_DISPLAY         (1<<3)  /* output is displayed to the user */
+#define MUTT_CM_UPDATE          (1<<4)  /* update structs on sync */
+#define MUTT_CM_WEED            (1<<5)  /* weed message/rfc822 attachment headers */
+#define MUTT_CM_CHARCONV        (1<<6)  /* perform character set conversions */
+#define MUTT_CM_PRINTING        (1<<7)  /* printing the message - display light */
+#define MUTT_CM_REPLYING        (1<<8)  /* replying the message */
 
-#define MUTT_CM_DECODE_PGP	  (1<<9) /* used for decoding PGP messages */
-#define MUTT_CM_DECODE_SMIME (1<<10) /* used for decoding S/MIME messages */
-#define MUTT_CM_DECODE_CRYPT  (MUTT_CM_DECODE_PGP | MUTT_CM_DECODE_SMIME)
+#define MUTT_CM_DECODE_PGP      (1<<9)  /* used for decoding PGP messages */
+#define MUTT_CM_DECODE_SMIME    (1<<10) /* used for decoding S/MIME messages */
+#define MUTT_CM_DECODE_CRYPT    (MUTT_CM_DECODE_PGP | MUTT_CM_DECODE_SMIME)
 
-#define MUTT_CM_VERIFY	(1<<11)	/* do signature verification */
+#define MUTT_CM_VERIFY          (1<<11) /* do signature verification */
 
 /* flags for mutt_copy_header() */
 #define CH_UPDATE         1       /* update the status and x-status fields? */

group.h

···
 #ifndef _MUTT_GROUP_H_
 #define _MUTT_GROUP_H_ 1
 
-#define MUTT_GROUP		0
-#define MUTT_UNGROUP	1
+#define MUTT_GROUP   0
+#define MUTT_UNGROUP 1
 
 void mutt_group_add_adrlist (group_t *g, ADDRESS *a);
 

mailbox.h

···
 #define _MAILBOX_H
 
 /* flags for mutt_open_mailbox() */
-#define MUTT_NOSORT	(1<<0) /* do not sort the mailbox after opening it */
-#define MUTT_APPEND	(1<<1) /* open mailbox for appending messages */
-#define MUTT_READONLY	(1<<2) /* open in read-only mode */
-#define MUTT_QUIET		(1<<3) /* do not print any messages */
-#define MUTT_NEWFOLDER	(1<<4) /* create a new folder - same as MUTT_APPEND, but uses
-				* safe_fopen() for mbox-style folders.
-				*/
+#define MUTT_NOSORT     (1<<0) /* do not sort the mailbox after opening it */
+#define MUTT_APPEND     (1<<1) /* open mailbox for appending messages */
+#define MUTT_READONLY   (1<<2) /* open in read-only mode */
+#define MUTT_QUIET      (1<<3) /* do not print any messages */
+#define MUTT_NEWFOLDER  (1<<4) /* create a new folder - same as MUTT_APPEND, but uses
+                                * safe_fopen() for mbox-style folders.
+                                */
 
 /* mx_open_new_message() */
-#define MUTT_ADD_FROM	(1<<0)	/* add a From_ line */
-#define MUTT_SET_DRAFT	(1<<1)	/* set the message draft flag */
+#define MUTT_ADD_FROM   (1<<0)  /* add a From_ line */
+#define MUTT_SET_DRAFT  (1<<1)  /* set the message draft flag */
 
 /* return values from mx_check_mailbox() */
 enum
 {
-  MUTT_NEW_MAIL = 1,	/* new mail received in mailbox */
-  MUTT_LOCKED,		/* couldn't lock the mailbox */
-  MUTT_REOPENED,		/* mailbox was reopened */
-  MUTT_FLAGS               /* nondestructive flags change (IMAP) */
+  MUTT_NEW_MAIL = 1,    /* new mail received in mailbox */
+  MUTT_LOCKED,          /* couldn't lock the mailbox */
+  MUTT_REOPENED,        /* mailbox was reopened */
+  MUTT_FLAGS            /* nondestructive flags change (IMAP) */
 };
 
 typedef struct _message

mutt.h

···
 #define  MUTT_PATTERN (1<<7) /* pattern mode - only used for history classes */
 
 /* flags for mutt_get_token() */
-#define MUTT_TOKEN_EQUAL		1	/* treat '=' as a special */
-#define MUTT_TOKEN_CONDENSE	(1<<1)	/* ^(char) to control chars (macros) */
-#define MUTT_TOKEN_SPACE		(1<<2)  /* don't treat whitespace as a term */
-#define MUTT_TOKEN_QUOTE		(1<<3)	/* don't interpret quotes */
-#define MUTT_TOKEN_PATTERN		(1<<4)	/* !)|~ are terms (for patterns) */
-#define MUTT_TOKEN_COMMENT		(1<<5)	/* don't reap comments */
-#define MUTT_TOKEN_SEMICOLON	(1<<6)	/* don't treat ; as special */
+#define MUTT_TOKEN_EQUAL      1       /* treat '=' as a special */
+#define MUTT_TOKEN_CONDENSE   (1<<1)  /* ^(char) to control chars (macros) */
+#define MUTT_TOKEN_SPACE      (1<<2)  /* don't treat whitespace as a term */
+#define MUTT_TOKEN_QUOTE      (1<<3)  /* don't interpret quotes */
+#define MUTT_TOKEN_PATTERN    (1<<4)  /* !)|~ are terms (for patterns) */
+#define MUTT_TOKEN_COMMENT    (1<<5)  /* don't reap comments */
+#define MUTT_TOKEN_SEMICOLON  (1<<6)  /* don't treat ; as special */
 
 typedef struct
 {
···
 /* flags for mutt_FormatString() */
 typedef enum
 {
-  MUTT_FORMAT_FORCESUBJ	= (1<<0), /* print the subject even if unchanged */
-  MUTT_FORMAT_TREE		= (1<<1), /* draw the thread tree */
-  MUTT_FORMAT_MAKEPRINT	= (1<<2), /* make sure that all chars are printable */
-  MUTT_FORMAT_OPTIONAL	= (1<<3),
-  MUTT_FORMAT_STAT_FILE	= (1<<4), /* used by mutt_attach_fmt */
-  MUTT_FORMAT_ARROWCURSOR	= (1<<5), /* reserve space for arrow_cursor */
-  MUTT_FORMAT_INDEX	= (1<<6), /* this is a main index entry */
-  MUTT_FORMAT_NOFILTER	= (1<<7)  /* do not allow filtering on this pass */
+  MUTT_FORMAT_FORCESUBJ   = (1<<0), /* print the subject even if unchanged */
+  MUTT_FORMAT_TREE        = (1<<1), /* draw the thread tree */
+  MUTT_FORMAT_MAKEPRINT   = (1<<2), /* make sure that all chars are printable */
+  MUTT_FORMAT_OPTIONAL    = (1<<3),
+  MUTT_FORMAT_STAT_FILE   = (1<<4), /* used by mutt_attach_fmt */
+  MUTT_FORMAT_ARROWCURSOR = (1<<5), /* reserve space for arrow_cursor */
+  MUTT_FORMAT_INDEX       = (1<<6), /* this is a main index entry */
+  MUTT_FORMAT_NOFILTER    = (1<<7)  /* do not allow filtering on this pass */
 } format_flag;
 
 /* types for mutt_add_hook() */
-#define MUTT_FOLDERHOOK	1
-#define MUTT_MBOXHOOK	(1<<1)
-#define MUTT_SENDHOOK	(1<<2)
-#define MUTT_FCCHOOK	(1<<3)
-#define MUTT_SAVEHOOK	(1<<4)
-#define MUTT_CHARSETHOOK	(1<<5)
-#define MUTT_ICONVHOOK 	(1<<6)
-#define MUTT_MESSAGEHOOK	(1<<7)
-#define MUTT_CRYPTHOOK	(1<<8)
-#define MUTT_ACCOUNTHOOK	(1<<9)
-#define MUTT_REPLYHOOK	(1<<10)
-#define MUTT_SEND2HOOK     (1<<11)
+#define MUTT_FOLDERHOOK  1
+#define MUTT_MBOXHOOK    (1<<1)
+#define MUTT_SENDHOOK    (1<<2)
+#define MUTT_FCCHOOK     (1<<3)
+#define MUTT_SAVEHOOK    (1<<4)
+#define MUTT_CHARSETHOOK (1<<5)
+#define MUTT_ICONVHOOK   (1<<6)
+#define MUTT_MESSAGEHOOK (1<<7)
+#define MUTT_CRYPTHOOK   (1<<8)
+#define MUTT_ACCOUNTHOOK (1<<9)
+#define MUTT_REPLYHOOK   (1<<10)
+#define MUTT_SEND2HOOK   (1<<11)
 
 /* tree characters for linearize_tree and print_enriched_string */
-#define MUTT_TREE_LLCORNER		1
-#define MUTT_TREE_ULCORNER		2
-#define MUTT_TREE_LTEE		3
-#define MUTT_TREE_HLINE		4
-#define MUTT_TREE_VLINE		5
-#define MUTT_TREE_SPACE		6
-#define MUTT_TREE_RARROW		7
-#define MUTT_TREE_STAR		8
-#define MUTT_TREE_HIDDEN		9
-#define MUTT_TREE_EQUALS		10
-#define MUTT_TREE_TTEE		11
-#define MUTT_TREE_BTEE		12
-#define MUTT_TREE_MISSING		13
-#define MUTT_TREE_MAX		14
+#define MUTT_TREE_LLCORNER      1
+#define MUTT_TREE_ULCORNER      2
+#define MUTT_TREE_LTEE          3
+#define MUTT_TREE_HLINE         4
+#define MUTT_TREE_VLINE         5
+#define MUTT_TREE_SPACE         6
+#define MUTT_TREE_RARROW        7
+#define MUTT_TREE_STAR          8
+#define MUTT_TREE_HIDDEN        9
+#define MUTT_TREE_EQUALS        10
+#define MUTT_TREE_TTEE          11
+#define MUTT_TREE_BTEE          12
+#define MUTT_TREE_MISSING       13
+#define MUTT_TREE_MAX           14
 
-#define MUTT_THREAD_COLLAPSE	(1<<0)
-#define MUTT_THREAD_UNCOLLAPSE	(1<<1)
-#define MUTT_THREAD_GET_HIDDEN	(1<<2)
-#define MUTT_THREAD_UNREAD		(1<<3)
-#define MUTT_THREAD_NEXT_UNREAD	(1<<4)
+#define MUTT_THREAD_COLLAPSE    (1<<0)
+#define MUTT_THREAD_UNCOLLAPSE  (1<<1)
+#define MUTT_THREAD_GET_HIDDEN  (1<<2)
+#define MUTT_THREAD_UNREAD      (1<<3)
+#define MUTT_THREAD_NEXT_UNREAD (1<<4)
 
 enum
 {
···
 #define MUTT_COMPOSE_NOFREEHEADER (1<<0)
 
 /* flags to _mutt_select_file() */
-#define MUTT_SEL_BUFFY	(1<<0)
-#define MUTT_SEL_MULTI	(1<<1)
-#define MUTT_SEL_FOLDER	(1<<2)
+#define MUTT_SEL_BUFFY  (1<<0)
+#define MUTT_SEL_MULTI  (1<<1)
+#define MUTT_SEL_FOLDER (1<<2)
 
 /* flags for parse_spam_list */
 #define MUTT_SPAM          1
···
 } ENTER_STATE;
 
 /* flags for the STATE struct */
-#define MUTT_DISPLAY	(1<<0) /* output is displayed to the user */
-#define MUTT_VERIFY	(1<<1) /* perform signature verification */
+#define MUTT_DISPLAY       (1<<0) /* output is displayed to the user */
+#define MUTT_VERIFY        (1<<1) /* perform signature verification */
 #define MUTT_PENDINGPREFIX (1<<2) /* prefix to write, but character must follow */
 #define MUTT_WEED          (1<<3) /* weed headers even when not in display mode */
-#define MUTT_CHARCONV	(1<<4) /* Do character set conversions */
-#define MUTT_PRINTING	(1<<5) /* are we printing? - MUTT_DISPLAY "light" */
-#define MUTT_REPLYING	(1<<6) /* are we replying? */
-#define MUTT_FIRSTDONE	(1<<7) /* the first attachment has been done */
+#define MUTT_CHARCONV      (1<<4) /* Do character set conversions */
+#define MUTT_PRINTING      (1<<5) /* are we printing? - MUTT_DISPLAY "light" */
+#define MUTT_REPLYING      (1<<6) /* are we replying? */
+#define MUTT_FIRSTDONE     (1<<7) /* the first attachment has been done */
 
 #define state_set_prefix(s) ((s)->flags |= MUTT_PENDINGPREFIX)
 #define state_reset_prefix(s) ((s)->flags &= ~MUTT_PENDINGPREFIX)

mutt_curses.h

···
   struct color_line *next;
 } COLOR_LINE;
 
-#define MUTT_PROGRESS_SIZE		(1<<0)	/* traffic-based progress */
-#define MUTT_PROGRESS_MSG		(1<<1)	/* message-based progress */
+#define MUTT_PROGRESS_SIZE      (1<<0)  /* traffic-based progress */
+#define MUTT_PROGRESS_MSG       (1<<1)  /* message-based progress */
 
 typedef struct
 {

pager.h

···
 #include "attach.h"
 
 /* dynamic internal flags */
-#define MUTT_SHOWFLAT	(1<<0)
-#define MUTT_SHOWCOLOR	(1<<1)
-#define MUTT_HIDE		(1<<2)
-#define MUTT_SEARCH	(1<<3)
-#define MUTT_TYPES		(1<<4)
-#define MUTT_SHOW		(MUTT_SHOWCOLOR | MUTT_SHOWFLAT)
+#define MUTT_SHOWFLAT   (1<<0)
+#define MUTT_SHOWCOLOR  (1<<1)
+#define MUTT_HIDE       (1<<2)
+#define MUTT_SEARCH     (1<<3)
+#define MUTT_TYPES      (1<<4)
+#define MUTT_SHOW       (MUTT_SHOWCOLOR | MUTT_SHOWFLAT)
 
 /* exported flags for mutt_(do_)?pager */
-#define MUTT_PAGER_NSKIP		(1<<5)	/* preserve whitespace with smartwrap */
-#define MUTT_PAGER_MARKER		(1<<6)	/* use markers if option is set */
-#define MUTT_PAGER_RETWINCH	(1<<7)	/* need reformatting on SIGWINCH */
-#define MUTT_PAGER_MESSAGE		(MUTT_SHOWCOLOR | MUTT_PAGER_MARKER)
-#define MUTT_PAGER_ATTACHMENT	(1<<8)
-#define MUTT_PAGER_NOWRAP		(1<<9)	/* format for term width, ignore $wrap */
+#define MUTT_PAGER_NSKIP       (1<<5)  /* preserve whitespace with smartwrap */
+#define MUTT_PAGER_MARKER      (1<<6)  /* use markers if option is set */
+#define MUTT_PAGER_RETWINCH    (1<<7)  /* need reformatting on SIGWINCH */
+#define MUTT_PAGER_MESSAGE     (MUTT_SHOWCOLOR | MUTT_PAGER_MARKER)
+#define MUTT_PAGER_ATTACHMENT  (1<<8)
+#define MUTT_PAGER_NOWRAP      (1<<9)  /* format for term width, ignore $wrap */
 
-#define MUTT_DISPLAYFLAGS	(MUTT_SHOW | MUTT_PAGER_NSKIP | MUTT_PAGER_MARKER)
+#define MUTT_DISPLAYFLAGS      (MUTT_SHOW | MUTT_PAGER_NSKIP | MUTT_PAGER_MARKER)
 
 typedef struct
 {