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#ifndef WS_H
#define WS_H
struct index_state;
struct strbuf;
/*
* whitespace rules.
* used by both diff and apply
* last two octal-digits are tab width (we support only up to 63).
*/
#define WS_BLANK_AT_EOL (1<<6)
#define WS_SPACE_BEFORE_TAB (1<<7)
#define WS_INDENT_WITH_NON_TAB (1<<8)
#define WS_CR_AT_EOL (1<<9)
#define WS_BLANK_AT_EOF (1<<10)
#define WS_TAB_IN_INDENT (1<<11)
#define WS_INCOMPLETE_LINE (1<<12)
#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
#define WS_TAB_WIDTH_MASK ((1<<6)-1)
/* All WS_* -- when extended, adapt constants defined after diff.c:diff_symbol */
#define WS_RULE_MASK ((1<<16)-1)
extern unsigned whitespace_rule_cfg;
unsigned whitespace_rule(struct index_state *, const char *);
unsigned parse_whitespace_rule(const char *);
unsigned ws_check(const char *line, int len, unsigned ws_rule);
void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
char *whitespace_error_string(unsigned ws);
void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
int ws_blank_line(const char *line, int len);
#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
#endif /* WS_H */
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