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Parse quotes when extracting words from command history (#291)

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This avoids splitting on quoted whitespace when extracting words
from the command history using the emacs M-. or vi _ command.

Example: if the prior command is

$ ls Stairway\ To\ Heaven.mp3

then, M-. in Emacs editing mode (and _ in vi mode) now inserts
Stairway\ To\ Heaven.mp3 instead of Heaven.mp3. The behavior is
similar for 'Stairway To Heaven.mp3' and "Stairway To Heaven.mp3".

src/cmd/ksh93/edit/history.c: hist_word():
- Skip over single-quoted and double-quoted strings and
  backslash-escaped characters.

src/cmd/ksh93/tests/pty.sh:
- Add regression test for this feature in vi mode. Since emacs and
  vi both use the same code for this, that should be good enough.

Co-authored-by: Martijn Dekker <martijn@inlv.org>
This commit is contained in:
Govind Kamat 2021-04-30 11:45:50 -07:00 • committed by Martijn Dekker
parent d087b031f0
commit 7439e3dffe
3 changed files with 36 additions and 4 deletions
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14
src/cmd/ksh93/tests/pty.sh
View file

@ -812,5 +812,19 @@ r ^:test-1: echo ok\r\n$
r ^ok\r\n$
!
# err_exit #
((SHOPT_VSH)) && tst $LINENO <<"!"
L split on quoted whitespace when extracting words from command history
# https://github.com/ksh93/ksh/pull/291
d 15
p :test-1:
w true ls One\\ "Two Three"$'Four Five'.mp3
r ^:test-1: true ls One\\ "Two Three"\$'Four Five'\.mp3\r\n$
p :test-2:
w :\E_
r ^:test-2: : One\\ "Two Three"\$'Four Five'\.mp3\r\n$
!
# ======
exit $((Errors<125?Errors:125))