最も内側の環境begin{question}とそれに対応するend{question}。
サンプルデータ
\section{Takayasu arteritis}
\begin{question}
{You get a patient.
What do you notice first in this patient?}
Absence of peripheral pulse.
\end{question}
\begin{question}
{What was the first Takayasu case?}
Young woman in Asia with red vessels in the eye.
So special eye diagnosis done.
Affects eye.
\end{question}
Fever of unknown origin can be used when you do not know what is causing the disease.
% Show cases in MedScape and ask class.
Aneurysms.
\subsection{Treatment}
\begin{question}
{What you should always include in Takayasu treatment?
What are the symptoms?}
Blood pressure.
Aneurysms which will burst without treatment.
So blood pressure decreasing drugs like beta blockers along in combination with other drugs.
\end{question}
私の予想結果は
\begin{question}
{You get a patient.
What do you notice first in this patient?}
Absence of peripheral pulse.
\end{question}
または
\begin{question}
{What was the first Takayasu case?}
Young woman in Asia with red vessels in the eye.
So special eye diagnosis done.
Affects eye.
\end{question}
または
\begin{question}
{What you should always include in Takayasu treatment?
What are the symptoms?}
Blood pressure.
Aneurysms which will burst without treatment.
So blood pressure decreasing drugs like beta blockers along in combination with other drugs.
\end{question}
どのように最も内部環境にのみ一致できますか？
答え1
この試み：
pcregrep -M '\\begin{question}(.|\n)*?\\end{question}'
説明する：
pcregrep: grep Perl 互換正規表現-M: パターンが複数行に一致することを許可する(.|\n)*?：non-greedyモードでは、一般文字または.改行文字が\n0回以上一致します。.?
結果：
\begin{question}
{You get a patient.
What do you notice first in this patient?}
Absence of peripheral pulse.
\end{question}
\begin{question}
{What was the first Takayasu case?}
Young woman in Asia with red vessels in the eye.
So special eye diagnosis done.
Affects eye.
\end{question}
\begin{question}
{What you should always include in Takayasu treatment?
What are the symptoms?}
Blood pressure.
Aneurysms which will burst without treatment.
So blood pressure decreasing drugs like beta blockers along in combination with other drugs.
\end{question}
答え2
純粋な正規表現ソリューションが必要ですか、それとも単に消えますか？
perl -lne 'print if(/^\\begin{question}/ .. /^\\end{question}/)' file