如何在Emacs中大写英文字符串

Question

I'm wondering what's people using to correctly capitalize english strings since ''capitalize'' won't do the job:

(capitalize "can't")
=> "Can'T"

Although writing this function is trivial, I'm wondering if there's a preferred built-in way to do it.

Answer 1

Maybe if you temporarily add ' to the current word constituent syntax table:

(modify-syntax-entry ?' "w")

(capitalize "can't")
=> "Can't"

Answer 2

我有Mc一定要大写单词，并且它can't正确地大写。

Answer 3

Current answers are fine, but if you work with strings in code, you can use s string manipulation library. s-capitalize capitalizes the first word in a sentence.

ELISP> (s-capitalize "can't win the war on drugs in a prison, where the hell you gonna win it?")
"Can't win the war on drugs in a prison, where the hell you gonna win it?"
ELISP> (s-join " " (-map 's-capitalize (s-split " " "can't win the war on drugs in a prison, where the hell you gonna win it?")))
"Can't Win The War On Drugs In A Prison, Where The Hell You Gonna Win It?"

s-titleize capitalizes every word in a string, but it's a simple wrapper around built-in capitalize , therefore Karl Voigtland's workaround applies.

ELISP> (s-titleize "Girl, you can't even think of calling this shit a war.")
"Girl, You Can'T Even Think Of Calling This Shit A War."
ELISP> (progn (modify-syntax-entry ?' "w") (s-titleize "Girl, you can't even think of calling this shit a war."))
"Girl, You Can't Even Think Of Calling This Shit A War."

Answer 4

The behavior depends of course on the syntax-table in use, ie depends on the major-mode. If the ' character has the "wp" syntax, then it should work correctly. This is the case in text-mode, but not in most programming modes.