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https://github.com/MidnightCommander/mc
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Update description of syntax highlighting.
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Pavel Roskin
parent
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172
doc/mcedit.1.in
172
doc/mcedit.1.in
@ -67,7 +67,7 @@ indent and ispell.
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.SH KEYS
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The editor is easy to use and can be used without learning. The
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pull-down menu is invoked by pressing F9. You can learn other keys from
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the menu and from the buttor bar labels.
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the menu and from the button bar labels.
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.PP
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In addition to that, Shift combined with arrows does text highlighting
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(if supported by the terminal):
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@ -84,8 +84,8 @@ and
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.B Ctrl-Del
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deletes highlighted text. Mouse highlighting also works on some
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terminals. To use the standard mouse support provided by your terminal,
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hold the Shift key. Don't forget that the mouse support in the terminal
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doesn't share the clipoard with
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hold the Shift key. Please note that the mouse support in the terminal
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doesn't share the clipboard with
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.BR mcedit .
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.PP
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The completion key (usually
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@ -183,36 +183,36 @@ wholechars abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_
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# default colors
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context default
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keyword whole if 24
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keyword whole else 24
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keyword whole for 24
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keyword whole while 24
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keyword whole do 24
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keyword whole switch 24
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keyword whole case 24
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keyword whole static 24
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keyword whole extern 24
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keyword { 14
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keyword } 14
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keyword '*' 6
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keyword whole if yellow
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keyword whole else yellow
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keyword whole for yellow
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keyword whole while yellow
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keyword whole do yellow
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keyword whole switch yellow
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keyword whole case yellow
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keyword whole static yellow
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keyword whole extern yellow
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keyword { brightcyan
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keyword } brightcyan
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keyword '*' green
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# C comments
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context /\\* \\*/ 22
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context /\\* \\*/ brown
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# C preprocessor directives
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context linestart # \\n 18
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keyword \\\\\\n 24
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context linestart # \\n red
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keyword \\\\\\n brightred
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# C string constants
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context " " 6
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keyword %d 24
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keyword %s 24
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keyword %c 24
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keyword \\\\" 24
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context " " green
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keyword %d brightgreen
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keyword %s brightgreen
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keyword %c brightgreen
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keyword \\\\" brightgreen
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.fi
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.PP
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Each context starts with a line of the form:
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.br
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.PP
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.B context
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.RB [ exclusive ]
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.RB [ whole | wholeright | wholeleft ]
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@ -222,35 +222,36 @@ Each context starts with a line of the form:
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.I delim
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.RI [ foreground ]
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.RI [ background ]
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.br
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One exception is the first context. It must start with the command
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.br
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.PP
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The first context is an exception. It must start with the command
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.PP
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.B context
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.B default
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.RI [ foreground ]
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.RI [ background ]
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.br
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or else
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.PP
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otherwise
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.B mcedit
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will report an error. The
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.B linestart
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option dictates that
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option specifies that
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.I delim
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must start at the beginning of a line. The
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.B whole
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option tells that delim must be a whole word. What constitutes a whole
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word are a set of characters that can be changed at any point in the
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file with the
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.B wholechars
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command. The
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.B wholechars
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command at the top just sets the set exactly to its default and could
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therefore have been omitted. To specify that a word must be whole on the
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left only, you can use the
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option tells that
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.I delim
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must be a whole word. To specify that a word must begin on the word
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boundary only on the left side, you can use the
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.B wholeleft
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option, and similarly on the right. The left and right set of characters
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can be set separately with,
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.br
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option, and similarly a word that must end on the word boundary is specified by
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.BR wholeright .
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.PP
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The set of characters that constitute a whole word can be changed at any
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point in the file with the
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.B wholechars
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command. The left and right set of characters can be set separately
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with
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.PP
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.B wholechars
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.RB [ left | right ]
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.I characters
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@ -261,46 +262,67 @@ option causes the text between the delimiters to be highlighted, but not
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the delimiters themselves.
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.PP
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Each rule is a line of the form:
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.br
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.PP
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.B keyword
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.RB [ whole | wholeright | wholeleft ]
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.RB [ linestart ]
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.I string
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.I foreground
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.RI [ background ]
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.br
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Context or keyword strings are interpreted, so that you can include
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tabs and spaces with the sequences \\t and \\s. Newlines and the \\ are
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.PP
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Context or keyword strings are interpreted, so that you can include tabs
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and spaces with the sequences \\t and \\s. Newlines and backslashes are
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specified with \\n and \\\\ respectively. Since whitespace is used as a
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separator, it may not be used as is. Also, \\* must be used to specify
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a *. The * itself is a wildcard that matches any length of characters.
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For example,
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an asterisk. The * itself is a wildcard that matches any length of
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characters. For example,
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.PP
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.nf
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keyword '*' 6
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keyword '*' green
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.fi
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colors all C single character constants green. You could also have
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used
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.PP
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colors all C single character constants green. You also could use
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.PP
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.nf
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keyword "*" 6
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keyword "*" green
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.fi
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to color string constants, except that the matched string may not cross
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newlines. The wildcard may be used within context delimiters as well,
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but you cannot have a wildcard as the last or first character.
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.PP
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to color string constants, but the matched string would not be allowed
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to span across multiple newlines. The wildcard may be used within
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context delimiters as well, but you cannot have a wildcard as the last
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or first character.
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.PP
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Important to note is the line
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.PP
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.nf
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keyword \\\\\\n 24
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keyword \\\\\\n brightgreen
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.fi
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.PP
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This line defines a keyword containing the \\ and newline characters.
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Since the keywords have a higher precedence than the context delimiters,
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this keyword prevents the context from ending at the end of the line if
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the line ends in a \\ thus allowing C preprocessor directive to continue
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across multiple lines.
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This line defines a keyword containing the backslash and newline
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characters. Since the keywords are matched before the context
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delimiters, this keyword prevents the context from ending at the end of
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the lines that end in a backslash, thus allowing C preprocessor
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directive to continue across multiple lines.
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.PP
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The possible colors are: black, gray, red, brightred, green,
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brightgreen, brown, yellow, blue, brightblue, magenta, brightmagenta,
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cyan, brightcyan, lightgray and white.
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cyan, brightcyan, lightgray and white. If the syntax file is shared
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with
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.BR cooledit ,
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it is possible to specify different colors for
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.B mcedit
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and
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.B cooledit
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by separating them with a slash, e.g.
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.PP
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.nf
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keyword #include red/Orange
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.fi
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.PP
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.B mcedit
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uses the color before the slash. See cooledit(1) for supported
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.B cooledit
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colors.
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.PP
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Comments may be put on a separate line starting with the hash sign (#).
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.PP
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@ -309,13 +331,13 @@ intricacies that will not be dealt with correctly but these are a minor
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irritation. On the whole, a broad spectrum of quite complicated
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situations are handled with these simple rules. It is a good idea to
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take a look at the syntax file to see some of the nifty tricks you can
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do with a little imagination. If you can't get by with the rules I have
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coded, and you think you have a rule that would be useful, please email
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me with your request. However, do not ask for regular expression
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do with a little imagination. If you cannot get by with the rules I
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have coded, and you think you have a rule that would be useful, please
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email me with your request. However, do not ask for regular expression
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support, because this is flatly impossible.
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.PP
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A useful hint is to work with as much as possible with the things you
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can do rather than try to do things that this implementation can't deal
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can do rather than try to do things that this implementation cannot deal
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with. Also remember that the aim of syntax highlighting is to make
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programming less prone to error, not to make code look pretty.
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.SH COLORS
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@ -331,8 +353,8 @@ editbold=yellow,black:\\
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editmarked=black,cyan"
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.fi
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.SH OPTIONS
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Most options can now be set from the editors options dialog
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box. See the
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Most options can now be set from the editors options dialog box. See
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the
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.B Options
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menu. The following options are defined in
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.B ~/.mc/ini
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@ -424,17 +446,17 @@ apples %d oranges %d
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The last line specifies that the third and then the second number are to
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be used in place of the first and second.
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.PP
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It is advisable to use this feature with Prompt On Replace on, because
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a match is thought to be found whenever the number of arguments found
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It is advisable to use this feature with Prompt On Replace on, because a
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match is thought to be found whenever the number of arguments found
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matches the number given, which is not always a real match. Scanf also
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treats whitespace as being elastic. Note that the scanf format %[ is
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very useful for scanning strings, and whitespace.
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.PP
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The editor also displays non-us characters (160+). When editing
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The editor also displays non-us characters (160+). When editing
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binary files, you should set
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.B display bits
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to 7 bits in the Midnight Commander options menu to keep the
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spacing clean.
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to 7 bits in the Midnight Commander options menu to keep the spacing
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clean.
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.SH FILES
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.I @prefix@/share/mc/mc.hlp
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.IP
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@ -466,7 +488,7 @@ User's own temporary directory where block commands are processed
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and saved.
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.SH LICENSE
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This program is distributed under the terms of the GNU General Public
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License as published by the Free Software Foundation. See the built-in
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License as published by the Free Software Foundation. See the built-in
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help of the Midnight Commander for details on the License and the lack
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of warranty.
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.SH AVAILABILITY
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@ -475,7 +497,7 @@ ftp://ftp.ibiblio.org/pub/Linux/utils/file/managers/mc/.
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.SH SEE ALSO
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cooledit(1), mc(1), gpm(1), terminfo(1), scanf(3).
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.SH AUTHORS
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Paul Sheer (psheer@obsidian.co.za) is the developer of
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Paul Sheer (psheer@obsidian.co.za) is the original author of
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the Midnight Commander's internal editor.
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.SH BUGS
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Bugs should be reported to mc-devel@gnome.org
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