Re: [PATCH va/i18n-even-more] rebase-interactive: trim leading whitespace from progress count
Jakub Narębski writes: > On the gripping hand, the number of currently processed commits > (instructions) in an interactive rebase is a number, and arithmetic > expansion can be understood as shell equivalent of casting to integer. I get that argument; it is a bit too cute a justification for my taste, but the resulting code is consistent with how $total loses the potential leading whitespace, so I'll queue it as-is. Thanks. > >>> Signed-off-by: Johannes Sixt >>> --- >>> diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh >>> @@ -121,7 +121,7 @@ mark_action_done () { >>> sed -e 1q < "$todo" >> "$done" >>> sed -e 1d < "$todo" >> "$todo".new >>> mv -f "$todo".new "$todo" >>> - new_count=$(git stripspace --strip-comments <"$done" | wc -l) >>> + new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) )) >>> echo $new_count >"$msgnum" >>> total=$(($new_count + $(git stripspace --strip-comments <"$todo" | >>> wc -l))) >>> echo $total >"$end" -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH va/i18n-even-more] rebase-interactive: trim leading whitespace from progress count
W dniu 2016-07-28 o 20:22, Eric Sunshine pisze: > On Thu, Jul 28, 2016 at 1:47 PM, Johannes Sixt wrote: >> Interactive rebase uses 'wc -l' to write the current patch number >> in a progress report. Some implementations of 'wc -l' produce spaces >> before the number, leading to ugly output such as >> >> Rebasing ( 3/8) >> >> Remove the spaces using a trivial arithmetic evaluation. >> >> Before 9588c52 (i18n: rebase-interactive: mark strings for >> translation) this was not a problem because printf was used to >> generate the text. Since that commit, the count is interpolated >> directly from a shell variable into the text, where the spaces >> remain. The total number of patches does not have this problem >> even though it is interpolated from a shell variable in the same >> manner, because the variable is set by an arithmetic evaluation. >> >> Later in the script, there is a virtually identical case where >> leading spaces are trimmed, but it uses a pattern substitution: >> >> todocount=$(git stripspace --strip-comments <"$todo" | wc -l) >> todocount=${todocount##* } >> >> I did not choose this idiom because it adds a line of code, and >> there is already an arithmetic evaluation in the vicinity of the >> line that is changed here. > > On the other hand, to a newcomer (not familiar with this patch), > ${foo##* } is an obvious and intentional stripping of whitespace, > whereas taking advantage of a side-effect of arithmetic evaluation to > achieve the same is quite subtle and likely to be interpreted as > pointless, thus forces the reader to consult 'blame' to understand why > the code is the way it is. On the gripping hand, the number of currently processed commits (instructions) in an interactive rebase is a number, and arithmetic expansion can be understood as shell equivalent of casting to integer. >> Signed-off-by: Johannes Sixt >> --- >> diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh >> @@ -121,7 +121,7 @@ mark_action_done () { >> sed -e 1q < "$todo" >> "$done" >> sed -e 1d < "$todo" >> "$todo".new >> mv -f "$todo".new "$todo" >> - new_count=$(git stripspace --strip-comments <"$done" | wc -l) >> + new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) )) >> echo $new_count >"$msgnum" >> total=$(($new_count + $(git stripspace --strip-comments <"$todo" | >> wc -l))) >> echo $total >"$end" -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH va/i18n-even-more] rebase-interactive: trim leading whitespace from progress count
On Thu, Jul 28, 2016 at 1:47 PM, Johannes Sixt wrote: > Interactive rebase uses 'wc -l' to write the current patch number > in a progress report. Some implementations of 'wc -l' produce spaces > before the number, leading to ugly output such as > > Rebasing ( 3/8) > > Remove the spaces using a trivial arithmetic evaluation. > > Before 9588c52 (i18n: rebase-interactive: mark strings for > translation) this was not a problem because printf was used to > generate the text. Since that commit, the count is interpolated > directly from a shell variable into the text, where the spaces > remain. The total number of patches does not have this problem > even though it is interpolated from a shell variable in the same > manner, because the variable is set by an arithmetic evaluation. > > Later in the script, there is a virtually identical case where > leading spaces are trimmed, but it uses a pattern substitution: > > todocount=$(git stripspace --strip-comments <"$todo" | wc -l) > todocount=${todocount##* } > > I did not choose this idiom because it adds a line of code, and > there is already an arithmetic evaluation in the vicinity of the > line that is changed here. On the other hand, to a newcomer (not familiar with this patch), ${foo##* } is an obvious and intentional stripping of whitespace, whereas taking advantage of a side-effect of arithmetic evaluation to achieve the same is quite subtle and likely to be interpreted as pointless, thus forces the reader to consult 'blame' to understand why the code is the way it is. > Signed-off-by: Johannes Sixt > --- > diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh > @@ -121,7 +121,7 @@ mark_action_done () { > sed -e 1q < "$todo" >> "$done" > sed -e 1d < "$todo" >> "$todo".new > mv -f "$todo".new "$todo" > - new_count=$(git stripspace --strip-comments <"$done" | wc -l) > + new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) )) > echo $new_count >"$msgnum" > total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc > -l))) > echo $total >"$end" -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH va/i18n-even-more] rebase-interactive: trim leading whitespace from progress count
Interactive rebase uses 'wc -l' to write the current patch number in a progress report. Some implementations of 'wc -l' produce spaces before the number, leading to ugly output such as Rebasing ( 3/8) Remove the spaces using a trivial arithmetic evaluation. Before 9588c52 (i18n: rebase-interactive: mark strings for translation) this was not a problem because printf was used to generate the text. Since that commit, the count is interpolated directly from a shell variable into the text, where the spaces remain. The total number of patches does not have this problem even though it is interpolated from a shell variable in the same manner, because the variable is set by an arithmetic evaluation. Later in the script, there is a virtually identical case where leading spaces are trimmed, but it uses a pattern substitution: todocount=$(git stripspace --strip-comments <"$todo" | wc -l) todocount=${todocount##* } I did not choose this idiom because it adds a line of code, and there is already an arithmetic evaluation in the vicinity of the line that is changed here. Signed-off-by: Johannes Sixt --- git-rebase--interactive.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index ded4595..e2da524 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -121,7 +121,7 @@ mark_action_done () { sed -e 1q < "$todo" >> "$done" sed -e 1d < "$todo" >> "$todo".new mv -f "$todo".new "$todo" - new_count=$(git stripspace --strip-comments <"$done" | wc -l) + new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) )) echo $new_count >"$msgnum" total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc -l))) echo $total >"$end" -- 2.9.0.443.ga8520ad -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html