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zz40-xc-ovr.m4: parentheses balancing of 'case' statements

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m4 quadrigraph shell comment technique allows proper autoconf
parentheses balancing in shell 'case' statements. The presence
of unbalanced parentheses may otherwise trigger expansion bugs.
pull/10/head
Yang Tse 12 years ago
parent 15177a631e
commit b157f4a0be
1 changed files with 6 additions and 6 deletions
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  1. 12
      m4/zz40-xc-ovr.m4

12
m4/zz40-xc-ovr.m4
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@ -60,7 +60,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO],
xc_tst_str='unknown' xc_tst_str='unknown'
(`echo "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success' (`echo "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success'
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
xsuccess) xsuccess)
: :
;; ;;
@ -88,7 +88,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_TEST],
xc_tst_str='unknown' xc_tst_str='unknown'
(`test -n "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success' (`test -n "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success'
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
xsuccess) xsuccess)
: :
;; ;;
@ -115,7 +115,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_VAR_PATH],
xc_tst_str='unknown' xc_tst_str='unknown'
(`test -n "$PATH" >/dev/null 2>&1`) && xc_tst_str='success' (`test -n "$PATH" >/dev/null 2>&1`) && xc_tst_str='success'
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
xsuccess) xsuccess)
: :
;; ;;
@ -142,7 +142,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR],
xc_tst_str='unknown' xc_tst_str='unknown'
xc_tst_str=(`expr "$xc_tst_str" : '.*' 2>/dev/null`) xc_tst_str=(`expr "$xc_tst_str" : '.*' 2>/dev/null`)
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
x7) x7)
: :
;; ;;
@ -174,7 +174,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_SED],
xc_tst_str='unknown' xc_tst_str='unknown'
xc_tst_str=(`echo "$xc_tst_str" 2>/dev/null \ xc_tst_str=(`echo "$xc_tst_str" 2>/dev/null \
| sed -e 's:unknown:success:' 2>/dev/null`) | sed -e 's:unknown:success:' 2>/dev/null`)
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
xsuccess) xsuccess)
: :
;; ;;
@ -206,7 +206,7 @@ AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP],
xc_tst_str='unknown' xc_tst_str='unknown'
(`echo "$xc_tst_str" 2>/dev/null \ (`echo "$xc_tst_str" 2>/dev/null \
| grep 'unknown' >/dev/null 2>&1`) && xc_tst_str='success' | grep 'unknown' >/dev/null 2>&1`) && xc_tst_str='success'
case "x$xc_tst_str" in case "x$xc_tst_str" in @%:@((
xsuccess) xsuccess)
: :
;; ;;

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