Emacs中LaTeX的代碼摺疊

Question

有沒有一種Emacs小模式（或elisp代碼），可讓您在LaTeX模式下選擇性地隱藏/顯示環境？例如，我想移動到一個很長的\begin{figure}區塊的開頭，擊中按鍵，並且隱藏該圖形環境的內容。與\begin{proof}等類似，理想情況下甚至與\subsection s。

這可能嗎？我剛剛嘗試hs-minor-mode,allout-mode和outline-minor-mode，但其中大多數人不認識LaTeX的環境，例如hs-minor-mode失敗，出現「掃描錯誤：不平衡括號」。我寧願不必輸入明確的摺疊標記，如{{{如folding-mode。

[理想的情況下這將是巨大的，如果摺疊是persistent，但我看到了這個問題並沒有一個公認的答案。]

Answer 1

AUCTeX確實摺疊：http://www.gnu.org/software/auctex/manual/auctex.html#Folding

A popular complaint about markup languages like TeX and LaTeX is that there is too much clutter in the source text and that one cannot focus well on the content. There are macros where you are only interested in the content they are enclosing, like font specifiers where the content might already be fontified in a special way by font locking. Or macros the content of which you only want to see when actually editing it, like footnotes or citations. Similarly you might find certain environments or comments distracting when trying to concentrate on the body of your document.

With AUCTeX’s folding functionality you can collapse those items and replace them by a fixed string, the content of one of their arguments, or a mixture of both. If you want to make the original text visible again in order to view or edit it, move point sideways onto the placeholder (also called display string) or left-click with the mouse pointer on it. (The latter is currently only supported on Emacs.) The macro or environment will unfold automatically, stay open as long as point is inside of it and collapse again once you move point out of it. (Note that folding of environments currently does not work in every AUCTeX mode.)

In order to use this feature, you have to activate TeX-fold-mode which will activate the auto-reveal feature and the necessary commands to hide and show macros and environments. You can activate the mode in a certain buffer by typing the command M-x TeX-fold-mode RET or using the keyboard shortcut C-c C-o C-f . If you want to use it every time you edit a LaTeX document, add it to a hook:

(add-hook 'LaTeX-mode-hook (lambda() 
          (TeX-fold-mode 1))) 

If it should be activated in all AUCTeX modes, use TeX-mode-hook instead of LaTeX-mode-hook .

Once the mode is active there are several commands available to hide and show macros, environments and comments...