diff options
Diffstat (limited to 'src/tr.c')
| -rw-r--r-- | src/tr.c | 44 |
1 files changed, 22 insertions, 22 deletions
@@ -31,7 +31,7 @@ #include "xfreopen.h" #include "xstrtol.h" -/* The official name of this program (e.g., no `g' prefix). */ +/* The official name of this program (e.g., no 'g' prefix). */ #define PROGRAM_NAME "tr" #define AUTHORS proper_name ("Jim Meyering") @@ -101,7 +101,7 @@ enum Range_element_type For example, consider the POSIX version of the classic tr command: tr -cs 'a-zA-Z_' '[\n*]' String1 has 3 constructs, two of which are ranges (a-z and A-Z), - and a single normal character, `_'. String2 has one construct. */ + and a single normal character, '_'. String2 has one construct. */ struct List_element { enum Range_element_type type; @@ -133,9 +133,9 @@ struct List_element the corresponding argument string. The attributes are used mainly to verify that the strings are valid in the context of any options specified (like -s, -d, or -c). The main exception is the member - `tail', which is first used to construct the list. After construction, + 'tail', which is first used to construct the list. After construction, it is used by get_next to save its state when traversing the list. - The member `state' serves a similar function. */ + The member 'state' serves a similar function. */ struct Spec_list { /* Points to the head of the list of range elements. @@ -248,13 +248,13 @@ static char const *const char_class_name[] = "lower", "print", "punct", "space", "upper", "xdigit" }; -/* Array of boolean values. A character `c' is a member of the +/* Array of boolean values. A character 'c' is a member of the squeeze set if and only if in_squeeze_set[c] is true. The squeeze set is defined by the last (possibly, the only) string argument on the command line when the squeeze option is given. */ static bool in_squeeze_set[N_CHARS]; -/* Array of boolean values. A character `c' is a member of the +/* Array of boolean values. A character 'c' is a member of the delete set if and only if in_delete_set[c] is true. The delete set is defined by the first (or only) string argument on the command line when the delete option is given. */ @@ -783,9 +783,9 @@ find_closing_delim (const struct E_string *es, size_t start_idx, beginning with P[ START_IDX ] comprise a valid [c*n] construct, then set *CHAR_TO_REPEAT, *REPEAT_COUNT, and *CLOSING_BRACKET_IDX and return zero. If the second character following - the opening bracket is not `*' or if no closing bracket can be + the opening bracket is not '*' or if no closing bracket can be found, return -1. If a closing bracket is found and the - second char is `*', but the string between the `*' and `]' isn't + second char is '*', but the string between the '*' and ']' isn't empty, an octal number, or a decimal number, print an error message and return -2. */ @@ -815,7 +815,7 @@ find_bracketed_repeat (const struct E_string *es, size_t start_idx, else { /* Here, we have found [c*s] where s should be a string - of octal (if it starts with `0') or decimal digits. */ + of octal (if it starts with '0') or decimal digits. */ char const *digit_str = &es->s[start_idx + 2]; char *d_end; if ((xstrtoumax (digit_str, &d_end, *digit_str == '0' ? 8 : 10, @@ -840,7 +840,7 @@ find_bracketed_repeat (const struct E_string *es, size_t start_idx, } /* Return true if the string at ES->s[IDX] matches the regular - expression `\*[0-9]*\]', false otherwise. The string does not + expression '\*[0-9]*\]', false otherwise. The string does not match if any of its characters are escaped. */ static bool _GL_ATTRIBUTE_PURE @@ -860,12 +860,12 @@ star_digits_closebracket (const struct E_string *es, size_t idx) /* Convert string UNESCAPED_STRING (which has been preprocessed to convert backslash-escape sequences) of length LEN characters into a linked list of the following 5 types of constructs: - - [:str:] Character class where `str' is one of the 12 valid strings. - - [=c=] Equivalence class where `c' is any single character. - - [c*n] Repeat the single character `c' `n' times. n may be omitted. - However, if `n' is present, it must be a non-negative octal or + - [:str:] Character class where 'str' is one of the 12 valid strings. + - [=c=] Equivalence class where 'c' is any single character. + - [c*n] Repeat the single character 'c' 'n' times. n may be omitted. + However, if 'n' is present, it must be a non-negative octal or decimal integer. - - r-s Range of characters from `r' to `s'. The second endpoint must + - r-s Range of characters from 'r' to 's'. The second endpoint must not precede the first in the current collating sequence. - c Any other character is interpreted as itself. */ @@ -879,7 +879,7 @@ build_spec_list (const struct E_string *es, struct Spec_list *result) /* The main for-loop below recognizes the 4 multi-character constructs. A character that matches (in its context) none of the multi-character - constructs is classified as `normal'. Since all multi-character + constructs is classified as 'normal'. Since all multi-character constructs have at least 3 characters, any strings of length 2 or less are composed solely of normal characters. Hence, the index of the outer for-loop runs only as far as LEN-2. */ @@ -985,8 +985,8 @@ build_spec_list (const struct E_string *es, struct Spec_list *result) continue; /* We reach this point if P does not match [:str:], [=c=], - [c*n], or [c*]. Now, see if P looks like a range `[-c' - (from `[' to `c'). */ + [c*n], or [c*]. Now, see if P looks like a range '[-c' + (from '[' to 'c'). */ } /* Look ahead one char for ranges like a-z. */ @@ -1020,7 +1020,7 @@ skip_construct (struct Spec_list *s) } /* Given a Spec_list S (with its saved state implicit in the values - of its members `tail' and `state'), return the next single character + of its members 'tail' and 'state'), return the next single character in the expansion of S's constructs. If the last character of S was returned on the previous call or if S was empty, this function returns -1. For example, successive calls to get_next where S @@ -1687,7 +1687,7 @@ read_and_delete (char *buf, size_t size) /* Read at most SIZE bytes from stdin into the array BUF. Then perform the in-place and one-to-one mapping specified by the global - array `xlate'. Return the number of characters read, or 0 upon EOF. */ + array 'xlate'. Return the number of characters read, or 0 upon EOF. */ static size_t read_and_xlate (char *buf, size_t size) @@ -1703,7 +1703,7 @@ read_and_xlate (char *buf, size_t size) /* Initialize a boolean membership set, IN_SET, with the character values obtained by traversing the linked list of constructs S - using the function `get_next'. IN_SET is expected to have been + using the function 'get_next'. IN_SET is expected to have been initialized to all zeros by the caller. If COMPLEMENT_THIS_SET is true the resulting set is complemented. */ @@ -1817,7 +1817,7 @@ main (int argc, char **argv) validate (s1, s2); - /* Use binary I/O, since `tr' is sometimes used to transliterate + /* Use binary I/O, since 'tr' is sometimes used to transliterate non-printable characters, or characters which are stripped away by text-mode reads (like CR and ^Z). */ if (O_BINARY && ! isatty (STDIN_FILENO)) |