Question

我现在正在使用vim编写一个LaTeX文档，并且在使用'gq'命令格式化段落时遇到了问题。例如，如果我有这样的段落：

some
text% this is a comment
some
text

'gqap'的结果是：

some text% this is a comment some text

我希望它会：

some text% this is a comment
some text

但是，如果评论是独立的，'gq'可以正常工作：

some
text
% this is a comment
some
text

得到：

some text
% this is a comment
some text

我只是不知道它是否是vim的bug，并且不知道如何解决它...任何帮助

更新

今天我为'formatexpr'编写了一个vim函数，以防止vim断行以“%%”结尾：

function FormatTeX()
    let lnum = v:lnum                             " I found that v:lnum and v:count may change before exiting this function, so I made a copy here
    let lcount = v:count
    let lb = lnum + lcount - 1
    let le = lb
    while lb >= lnum                              " process the file in inverse order, or we have to deal with line number changes
        if match(getline(lb), '%%$') >= 0
            if lb < le
                exec "normal! ".(lb + 1)."GzR"    " the zR here opens all fold, or the result may be wrong 
                exec "normal! gw".le."G"
            endif
            let le = lb - 1
        elseif lb == lnum
            if lcount > 1
                exec "normal! ".lb."GzR"
                exec "normal! gw".le."G"
            else
                return 1                          " when 'formatoptions' has an 'a' flag, this branch is necessary or the cursor will jump unpredictable...
                                                  " according to the source code of vim, if the return value of 'formatexpr' is non-zero, the build-in formatter is used.
            endif
        endif
        let lb = lb - 1
    endwhile
    return 0
endfunction

我希望这个糟糕的例子可以帮助其他面临类似问题的人。

Answer 1

有:help format-comments的提示：

Vim会在行首识别特定字符串的评论（忽略空格）。

虽然在使用gq格式化时似乎对三件式评论有一些特殊处理，但是不能在一行开头处开始的评论处理得不好。您必须将gq格式的范围限制在评论周围的文本中。

Answer 2

今天我为'formatexpr'编写了一个vim函数，以防止vim断行以“%%”结尾：

function FormatTeX()
    let lnum = v:lnum                             " I found that v:lnum and v:count may change before exiting this function, so I made a copy here
    let lcount = v:count
    let lb = lnum + lcount - 1
    let le = lb
    while lb >= lnum                              " process the file in inverse order, or we have to deal with line number changes
        if match(getline(lb), '%%$') >= 0
            if lb < le
                exec "normal! ".(lb + 1)."GzR"    " the zR here opens all fold, or the result may be wrong 
                exec "normal! gw".le."G"
            endif
            let le = lb - 1
        elseif lb == lnum
            if lcount > 1
                exec "normal! ".lb."GzR"
                exec "normal! gw".le."G"
            else
                return 1                          " when 'formatoptions' has an 'a' flag, this branch is necessary or the cursor will jump unpredictable...
                                                  " according to the source code of vim, if the return value of 'formatexpr' is non-zero, the build-in formatter is used.
            endif
        endif
        let lb = lb - 1
    endwhile
    return 0
endfunction

我希望这个糟糕的例子可以帮助其他面临类似问题的人。

'gq'命令将注释行与非注释行合并

更新

2 个答案: